How to Charge a Car Battery

Рет қаралды 399,566

7 жыл бұрын

Car Battery. How to charge a car battery, DIY with Scotty Kilmer. How to use a battery tender to charge any automotive battery so it will last for years. How to maintain car battery. DIY car repair with Scotty Kilmer, an auto mechanic for the last 48 years.
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Пікірлер: 366

@scottykilmer 6 жыл бұрын

Things I used in this video: 1. Battery Tender: amzn.to/2iEvQ8Q 2. Shop Towels: amzn.to/2jxKone 3. Common Sense 4. 4k Camera: amzn.to/2hZ4AxX 5. Mini Microphone: amzn.to/2newgV9 6. My computer for editing / uploading: amzn.to/2i2sKYz 7. Video editing software: amzn.to/2jv5Fhf 8. Thumbnail software: amzn.to/2k7tz6C 🛠Check out my Garage to see what I use every day and highly recommend: www.amazon.com/shop/scottykilmer ❗️Check out the Scotty store: goo.gl/RwhRGU 👉Follow me on Instagram for the latest news, funnies, and exclusive info / pics: goo.gl/ohy2cA

@mutefalon 6 жыл бұрын

Scotty Kilmer should upload how to ride a motorcycle

@lorenzobegay5903 6 жыл бұрын

Scotty Kilmer bypass wiring on Dodge caravan haet and ac blower motor

@lorenzobegay5903 6 жыл бұрын

Good stuff on your store but I need bypass wiring to heat and AC unit to caravan dodge 1999 3.3l I need help🔍🔎???

@realtalknaz748 2 жыл бұрын

The 3rd one had me rolling 😂😂

@ashtreylil1 2 жыл бұрын

#3 is missing the link 😂, if only it was that easy.

@brianmcgauley2664 2 жыл бұрын

Scotty, the original factory-new OEM battery in my 2010 Expedition lasted OVER ELEVEN YEARS because I occasionally used a battery desulfator. Mine was a Battery Minder brand, and I’m sure the Battery Tender brand is equally good. What people need to do is allow it to work for a long time, like for two weeks continuously when you are on vaca, to allow it time to thoroughly condition it. Or, several days of constant attachment, but more often. Mine was still good when I went ahead and replaced it while doing some other maintenance. Amazing. Great for use on boats over the winter, which is usually fatal to batteries left unattended. Love your videos, and especially your honesty.

@billycook5688 7 жыл бұрын

How to triumph over dead batteries, dat was cute.

@Millermacs 7 жыл бұрын

Lmao true

@Rezaroth 7 жыл бұрын

"How to triumph over dead batteries" I like that. Thank you for the amazing videos.

@kyleconger2109 6 жыл бұрын

After seeing this video I wanted one of these for my bike and lawnmower, but was too cheap to buy one. Ended up finding one at a liquidation store for half price.... I should have bought 2! Love it! Thanks Scotty!

@Rob-fx2dw 5 жыл бұрын

Scott - Another good idea for storing batteries out of your vehicle is to keep them off the concrete especially a cold concrete by putting them on an insulating material such a s piece of wood or rubber mat. It actually works since storing them on cold concrete has an accelerated effect of taking the charge out of them.

@recoveringnewyorker2243 7 жыл бұрын

Another great vid! I use a solar smart battery charger for my riding lawn mower. 2 1/2 years now on a 90 day warranty battery! Also , used a smart charger on a car battery that hadn't been used in 2 years. It took 3 weeks but it came back to 95% and is still going strong!

@photilal1960 7 жыл бұрын

I had a riding mower with a bad battery and I was so stubborn I used to jump start it every week off of my truck for months until it would no longer run even when the tractor was on lol.

@noahsnyder7142 7 жыл бұрын

Love your videos Scotty. You're a ton of help, and your cheesy humor is refreshing once in a while.

@OlympicGaming 7 жыл бұрын

Scotty's old videos are the exact same as the new ones (editing wise). thats awesome!

@aminalone 2 жыл бұрын

still 2022 lol

@phototristan 7 жыл бұрын

Nice Triumph.

@bbasham3160 7 жыл бұрын

Just got mine...best battery charger I've ever had...tending my 1952 8n Ford 6 volt tractor...Thanks!!! sir Scotty.

@schmoofadoop 7 жыл бұрын

Hi Scotty, I love your channel and thank you for all the great content! I had to comment regarding this video on Deltran's products. The warranty that comes with these units is A JOKE and I learned the hard way when I purchased two of their Battery Tender Plus model. I bought two of these for two different motorcycles... they both died within two years of purchase and the warranty is a joke. "The Battery Tender® Plus battery charger has a 10 year limited warranty, which is unprecedented among battery charger manufacturers." What they don't make so clear is that I am supposed to pay two way shipping for each unit... back when I checked it was about $20 to RMA each unit and $25 to just buy a Battery Tender Jr... so that's what I did. A few more years have gone by and so far those have been okay. The warranty on this particular unit in my opinion is useless... look into that before you invest! If I had invested in one of their high end models that cost me several hundred dollars then of course the $20 to have it repaired/replaced would have been the way to go... but in this case I think charging the customer 50% of the purchase price to warranty an item is just wrong. That covers their cost to replace the unit, they aren't covering anything... they're just selling me a new unit at cost.

@Southernshaker 7 жыл бұрын

you're the best Scottie, love your videos.

@ProwlXV 7 жыл бұрын

Day 4: I have searched thousands of trunks, I am still unable to find Scotty

@JonnyDIY 7 жыл бұрын

thanks for the great info Scotty. Ive found that disconnecting the Ground wire on my infrequently used cars or motorcycles keeps the battery from dying for much longer time (months) than when theyre both connected. I just top the charge off with a battery charger every so often.

@ChrisDIYerOklahoma 7 жыл бұрын

👍 I own three! One is the 24v unit for my DIY solar generator...charges/maintains two Trojan 31AGM "Overdrive" batteries. No issues at all. I have one 12v Tender hard-wired (like what you showed on the Triumph motorcycle) to my '14 Silverado. Messing with those alligator clips can be a PITA (they can easily be bumped off and the electrical connectivity isn't as good as the ring eyelet cord).

@2450logan 7 жыл бұрын

Thanks for another enjoyable but resourceful video scott

@AlanTrades 7 жыл бұрын

I enjoyed your enthusiasm, hand gestures, and tones of voice

@VirginianSpencer 6 жыл бұрын

Great advice. I love Battery Tenders. My original motorcycle battery lasted 10 years. That is not a typo - 10 years. My first lawnmower battery lasted 3 years. With a Battery Tender the second one is at 9 years and still going. GTO battery is now at 7 years. I do not own any stock in them either. And all mine are the cheapest ones except for one cheap waterproof one I got when my motorcycle sat in a carport.

@007Kellam 7 жыл бұрын

Hey Scotty! love your videos and I watch them all the time, I had a quick question! Will this work for smaller sealed lead acid batteries? For example, one that would be used in a computer power backup system or a security/fire system backup? I have a few that I only use every now and then but they seem to last less than a year!

@SeanDIY 6 жыл бұрын

I've used the battery Tender or similar. Work great and I've averaged 3 years on my motorcycle batteries over the years.

@retn5989 7 жыл бұрын

Scotty I can't tell you how awesome you are bud! Your videos are so short and to the point it's awesome! Thank you!

@MichaelMueller12 3 жыл бұрын

I enjoy this guys enthusiasm.

@jeffburtonnottheracecardriver 7 жыл бұрын

I have heard about this process and Tenders for years. Now I know where to get some. Thank you.

@Nogble 7 жыл бұрын

Hi. I like the way you show how to but, I love the way you unplug the charger cables.!! Lol

@chumk5191 7 жыл бұрын

Your videos are entertaining and educational!

@griffen98 6 жыл бұрын

As a retired mechanic I would like to tell you what I do. When in doubt I go to the manufacturers web page and get their recommendations. Seems like it's a whole lot simpler than listening to what other people think. Which is quite different in many cases. For example my cell phone battery tells me to drain it completely 3 times before recharging. It was aftermarket so maybe that's wrong I'm really not sure at this point from everything I've read. So when all else fails I follow the instructions

@benarthurs9514 6 жыл бұрын

best car videos on youtube keep making um

@tbrayden3694 4 жыл бұрын

Here during the pandemic. Not driving much, so bought a Battery Tender Plus.

@robbo8566 7 жыл бұрын

another awesome video scotty

@dwight.bennett 7 жыл бұрын

Scotty, Amazon has a 1-2 month leadtime on this model now...you make it popular!

@naiemhaniff7062 7 жыл бұрын

thanx for the awesome video scotty. greetings from suriname..

@roddydykes7053 7 жыл бұрын

Soon Scotty will have been a mechanic for the last 50 years, half a century, good god

@leannebell5717 4 жыл бұрын

Most helpful video I've come across. Love your enthusiasm and your accent!

@aleepjustfix8886 7 жыл бұрын

hey skotty. quick question. My car signal flashing too fast. it is could be a bad relay or bulb ?

@scottykilmer 7 жыл бұрын

normally a bad bulb, check that first

@andreso340 7 жыл бұрын

what works good for me is a voltage stabilizer that I've purchased. it reduces the load and makes it last longer then five years! it even have a cable to connect the battery and alternator.

@X0verXDriveX 6 жыл бұрын

00:18 I love how Scotty can just pop into existence like that.

@rayota260 6 жыл бұрын

ikr

@rusty8770 7 жыл бұрын

Got a Jap import Nissan Atlas truck. The 2 batteries used to die every few weeks and I was always charging them before it would go. Was so bad the truck wouldn't even start in winter without charging, it's 1997 and only has roughly 80,000km since it spends most of its life in the shed. I disconnected the radio a month ago and I've had no trouble with the batteries since, even though one of them needs replacing. I started it today first go, just happy it works properly now. It's only used to move ATV's and some youngstock, but it was a pain when it used to always go flat.

@ashleeomayrina 4 жыл бұрын

Hi Scotty. Thank you for the amazing videos that's been really helpful. I would juat like to ask: my alternator is dead, is there a way for me to charge my battery using a different car? Thank you in advance and more power to your channel.

@GlennLaycock 7 жыл бұрын

This is terrific . My convertible (04 GTC Sebring) .. it sat for many years in a garage .. and the battery .. well it would slowly discharge and freeze .. come spring it was bad. It is hidden the the fender and is horrible to remove, so this would be perfect when I start to store it again over the winter. I love the wires to allow a direct connection .. I guess you couldn't connect it to the terminals this car has in the engine bay, eh?

@ImaLoneWolfintheWoods 6 жыл бұрын

I actually need to get me one of those! Pretty awesome, and ive had many batteries die due to sitting....

@nararyacetta554 7 жыл бұрын

So, What does this product actually do? Just charging? If so, why do i need this? Why Can't I Just use a standard Battery charger? Thanks for the reply!

@jakemyboy72 7 жыл бұрын

TheStrongArmNick It's a trickle charger to maintain battery health when left in storage.

@scottykilmer 7 жыл бұрын

yes, jake explained it well. I maintains batteries over time, especially seldom used ones like motorcycles, boats, RVs, by exercising them and recharging. I just checked at an auto zone, they now only give a 60 day warranty on motorcycle batteries, and this device can make em last years.

@nararyacetta554 7 жыл бұрын

Scotty Kilmer Oh yes! Another thing, Now I know the thing trickles the battery, will it do much to lithium batteries? I mean lithium batteries already last very long time, Will it do any noticeable effects?

@kuhrd 7 жыл бұрын

When charging a lead acid battery or any other battery chemistry that off gases hydrogen when charging: If the charger has physical knobs check they are off or set to the correct voltage and current setting. Then connect the leads to the battery. Then verify the charger is set right or turned off before plugging it in. Once plugged in you can set settings and start the charge. Smart chargers are less likely to create a spark when connecting but it's still best practice to make your battery connections before the charger is plugged in and turned on. This is basic battery safety 101! Just because a battery has never exploded on you so far, doesn't mean it never will unless you always follow the safety steps.

@blindcheto195 7 жыл бұрын

For putting my bike in for the winter, do I use this all around or just fully charge it let's say once a week and then turn it off?

@yolsclassics6347 7 жыл бұрын

I use these chargers, they work great! (:

@deedeeday7923 6 жыл бұрын

How often should one charge the battery on a rarely used car?

@user-gv7st5xk6s 4 жыл бұрын

Same problem,I drovemy 4runner once a month in the last 1 year and hasn't had any problems,but my Opel astra the battery died only after 2 years!Well it all made sense when I checked where Fiamm batteries were made-In Italy😩😂😂😂.Piece of junk,do not buy Italian anything or cheap chinese knockoffs and you should be good!Oh yeah and drive your car once or twice a month 55-65 miles and you will be good!

@user-gv7st5xk6s 4 жыл бұрын

If the battery overtime is losing power,you can get Scotty's recommended battery charges!They are awesome,those tiny one lithium,but for gasoline engines only!

@donidino3349 6 жыл бұрын

Thanks Scotty!

@bed. 7 жыл бұрын

More motorcycle videos! !

@Johny40Se7en 7 жыл бұрын

Great little things those battery tenders / chargers.

@justinwallen2911 7 жыл бұрын

nice triumph. love those motorcycle.

@kbuff15 7 жыл бұрын

I also practice regular battery maintenance. But grid power is not readily available in most cases. My boat and travel trailer and other equipment (quad, skidoo) sit most of the time. I got a few PWM charge controllers with a small solar panels (25watt+). These are available for less then a $100 now a days. Set it and basically forget it!

@Michiganborn1969 7 жыл бұрын

I've got that brand charger but not as fancy. Perhaps on your next motorcycle video you can explain how to set it up for winter storage.

@stevegould1730 6 жыл бұрын

I’ve got one and it works great.

@robjames3864 7 жыл бұрын

Battery Tenders work great. I get at least 5 years out of 2 lawn tractor batteries that sit idle through freezing winters.

@SONOFAZOMBIE2025 7 жыл бұрын

Lithium batteries don't lose charge anywhere near the same rate like lead acid batteries... are sure that part isn't just snake oil? In fact charging a lithium to max each time, will reduce it's life.

@sebastian-daquanglocknerjr1883 7 жыл бұрын

Son of a Zombie yeah seems like only reason youd need it for a lithium is if charge is super low.

@alexm2623 7 жыл бұрын

It's true that lithium loses charge MUCH slower, but it DOES still lose it. Some guys will have bikes and boats that might not see use for a year or more just sitting in their garage. My dad for example has 7 motorcycles, so a few of them get "forgotten" and not ridden often - they need a tender even though they're lithium. If you ride it every few months, you don't need one UNLESS you only ride it short trips, in which case the alternator may not fully replenish the battery's charge, especially if you run the headlights on those short trips.

@Mike-73294 7 жыл бұрын

The Battery Tender is not a fast charger. It is a trickle charger and maintainer.

@fargeeks 7 жыл бұрын

+George Lopez but if you don't trickle charge and go for a more aggressive charge then you will put more strain on the battery

@SONOFAZOMBIE2025 7 жыл бұрын

Alex M calling BS. your dad would not have owned a lithium battery long enough yet for it even to have problems. lol Too much KZfaq vids for you.

@mainoffender1 7 жыл бұрын

I have an Optima charger. It brought back to life the battery in my Miata. It's now 7 years old.

@realmaindrianpace 7 жыл бұрын

I've got three Tender Jr's on three Optimas in seldom used cars. Great maintainer chargers, but this new one looks like an expensive bit of kit.

@abdelrhmanalgous9465 4 жыл бұрын

His sound same that small duck with Tom &Jerry 😂😂😂

@appleztooranges 2 жыл бұрын

I bought the 1.25 ah for my snowblower. Will it work for pickup truck?

@Tazmaniac610 3 жыл бұрын

I turned the volume down before the video loaded knowing I clicked on Scotty.

@matthewjaikissoon5274 7 жыл бұрын

hey Scotty I have a 2004 Toyota Camry. one question , why do I have to push down my brakes all the way to stop my car or slow down? I have new brake pads and rotors and the brake fluid is good.

@scottykilmer 7 жыл бұрын

those things often go low when old, if you don't like it, buy a new master cylinder and brake booster, but they cost quite a bit

@matthewjaikissoon5274 7 жыл бұрын

would you consider 90,000milrs old?

@CitarNosis317 7 жыл бұрын

2004 is old. :)

@lophilip 7 жыл бұрын

Try bleeding all the brake calipers.

@VintageCars999 7 жыл бұрын

Try replacing the fluid and bleed all the calipers. After i did a caliper job on mine my brakes work like new.

@Daniel28021991 7 жыл бұрын

Great video

@ManuelKorrigan 2 жыл бұрын

Hey Scotty... what about charging EFB at home. I'm asking due to vent hole and hydrogen emisions. Is it safe to do this at home? great video & great channel!!!

@glenharper3136 7 жыл бұрын

Cool looking bike.

@chrisbeamish6556 7 жыл бұрын

thanks Scotty finally get to see that triumph you told me about.

@chrisbeamish6556 7 жыл бұрын

really nice looking bike.

@Paisteboy 7 жыл бұрын

Just changed the battery on my Harley this year. I got 8 years out of it by using a battery tender. I probably could have gotten anther year out of it but it was starting to lack power so I replaced it before I got stuck somewhere.

@billdollarmovie140 7 жыл бұрын

nice bike, runs like a dream

@v8berenguer372 7 жыл бұрын

Cool cafe-racer!

@Y10Q 7 жыл бұрын

Or you could get a deep cycle battery. Last forever. Both of my tractors have a Deca Deep Cycle batteries. I have a spare one I keep in case I have to jump start a dead vehicle so I can cut the grass around it. The one on my White 100hp tractor was bought in 2006. Still Works fine. Tractor sits out in the weather, rain, sun, wind. Sometimes it goes two months without being cranked over. Starts right up every time. This is a good idea for riding mowers though.

@AudibleSweating 7 жыл бұрын

i recently bought a new battery for my 2010 nissan versa HB and i noticed that the negative terminal already has some acid corrosion on it. even after applying terminal protection on the first day. should this be any cause for concern?

@youngboyce1800 7 жыл бұрын

hi Scotty i have a problem really need your help ...i have a toyota corolla l touring wagon it had a 5A-FE but im swaping it with a 4A-FE my question is can i use back my 5afe harness on the 4afe and can u give me a sute were i can get the color coding for the 2 engine thanks

@scottykilmer 7 жыл бұрын

I never try such swaps, contact some junk yards to see if they've ever done that

@kimbegeman235 7 жыл бұрын

Donald Boyce

@jameswhitlock4659 6 жыл бұрын

Hey Scot I have a 125cc motorbike and it has a single cylinder engine and twin exhausts but more compression come out of the left exhaust than the right?

@alaintangcervantes 7 жыл бұрын

I have a Battery Tender Plus, Can I use it on my battery Optima Yellow top?

@dbzownz12345 3 жыл бұрын

Dumb question: Is it possible to revive a DEAD battery through a trickle charger? I don't care if I have to wait 4-5 days. I just want to know if it's possible, thanks in advance for answering!

@swp466 7 жыл бұрын

I used to use Battery Tender on my bike battery, but it still let it go bad. On my new battery, I switched to a Ctek charger. This was before BT put out their smart chargers though, so maybe they work better now.

@NebukedNezzer 7 жыл бұрын

I have maintained the charge on my motorcycle batteries since the 1960s and Scotty is correct that the battery can last a long time if properly cared for.

@warsok2151 4 жыл бұрын

Scotty will that be ok when charging the car battery while its in the car with cables on it or do I have to take the battery off and charge it?? Thanks in advance

@YoungBossSteppa 6 жыл бұрын

@scotty is it ok to start the bike while the battery is still charging?

@clarityofthought 3 жыл бұрын

Thanks just bought one from Costco

@cmritchie04 6 жыл бұрын

Question if you know you are going to store away a vehicle for a lengthy time period should discharge all of the energy from the battery till it is time then when the season comes just charge up the battery?

@tiborklein5349 6 жыл бұрын

Are you planning your rides months ahead?

@crockagator919 7 жыл бұрын

My 2008 CBR1000RR has the original YTZ7S battery in it. It stays on a maintainer every Iowa winter.

@muddshshshark 7 жыл бұрын

we used the 6 gang battery tender in our shop it would actually revive old dead batteries apparently they boost up to 30 volts to remove sulphates

@realcyborgh 7 жыл бұрын

i love the intro

@jonic9705 7 жыл бұрын

Top Stuff :)

@suggesttwo 6 жыл бұрын

You can make a charger maintainer with any 12V 1A dc supply and 2 clamps. It will take 2 days or more to charge a battery. Old Switching Power Supplies from laptops that put out 13.5V and 3ish amps are idea because they will fully charge the battery in a day with minimum maintaining current.

@JoeMeats 7 жыл бұрын

Scotty, I'm going through a 1 car battery a year and it always seems to be during the cold weather, the last battery i bought i asked them that i wanted a strong battery that would last through the winter... its fall know and the battery is already showing signs of death (mind you, its when the car starts, it gets weaker and weaker, when i drive the car the battery charges back up, if i drive the car every day it starts up fine but if i don't, 3rd or 4th day, the battery start is weak)... is it the batteries they're selling me? what seems to be the issue? 2007 Acura TL base, if you know what the problem is what's the best thing i could do besides brining it to the dealership and getting banged over the head with labor costs

@RayT70 6 жыл бұрын

I've got a battery disconnect for when I leave it for 2 weeks at a time. Will this save the battery?

@eileenlomeli4733 7 жыл бұрын

hey scotty you think you can help me solve the problem with my 99 dodge intrepid? I just recently changed the spark plugs and now my car won't start not even a crank and also I have a auto shutdown relay fuse that has a continuous clicking sound whenever I turn the key on and just stays on even when the key is out of the ignition

@unfundedopportunities7278 7 жыл бұрын

Scotty, I just replaced 6-year-old, 2-year battery from Walmart (a long time for a 2-year battery) with a new 3-year battery from Advance. The new battery is noticeably lighter. Any thoughts?

@scottykilmer 7 жыл бұрын

lets just say they make em cheaper than they used to. Bet you don't get 6 years out of this one

@stephenmaurer7008 7 жыл бұрын

I charge my deep-cycle marine battery for my boat every month. This might be a better method/ product? This battery is six years old and still works well.

@keyvo318 7 жыл бұрын

Hey Scotty I have a 2002 Nissan Sentra and it runs hot. I've changed the radiator, thermostat, radiator cap, and nothing still runs hot after a day or to after I refill it and there is no visible leaks no oil discoloration or smoke from tail pipe. Do you have any ideas?

@gregorypelletier2352 4 жыл бұрын

Hey Scotty, Back in the old days. I remember that there was a process of charging old batteries and renewing them back to brand new. Do you know this process.

@charlesmiller5078 7 жыл бұрын

I believe there is a difference between "trickle", and " Float" chargers, you want a float.Been buying cheap float chargers off E-Bay recently, seem to be working good, around 9.00 apiece, been using them for 3 or 4 years , so far working great. Battery tender is a better product, but the price has skyrocketed lately.

@benjaminsmith2058 7 жыл бұрын

Scott, I was wondering about a separate issue I'm having with my old 74 ford truck. it doesn't shut off normal it stays on when ignition is shut off. I belive the term is "desiling". I've replaced the fuel pump, filter. and I've made sure there's no vacuum leaks or air leaks. but still it likes to keep turning over. any more suggestions? I'm stumped

@scottykilmer 7 жыл бұрын

often a bad ignition siwtch, or a carburetor that's still leaking gas into the engine

@Mareyes2525 7 жыл бұрын

Hey Scotty, I just installed a dash cam in a new 2016 rav4 and the mechanic adjusted my voltage cutoff to 11.8v would this cause any problems? It was at 12v before but the parking mode wasn't consistently working so he reduced it so it will turn on. Just want your opinion on whats going on and if it will negatively affect my car battery in the long run. Thanks!

@scottykilmer 7 жыл бұрын

na, shouldn't harm anything, other than perhaps trim a little time off the battery lifespan

@transformer889 7 жыл бұрын

I have been using float charger from Harbor freight $4.99, it works just fine.

@scottykilmer 7 жыл бұрын

yes, they can work fine, but this technology is WAAY above that, and is really needed if you use any lithium batteries like I have in my bike

@toothfairygaming8303 7 жыл бұрын

Scotty Kilmer quick question, what's the most expensive car you've ever worked on? Thanks!

@zzsdadYY 3 жыл бұрын

I have had multiple Harbor Freight battery chargers die. I'd highly recommend finding a different brand.

@jakefin6891 7 жыл бұрын

What if you have a bike master true gel battery, will it work on those?

@scottykilmer 7 жыл бұрын

yes

@lanascunt 7 жыл бұрын

Glad to see you're being sponsored

@scottykilmer 7 жыл бұрын

just for this one video

@christopherraines7080 7 жыл бұрын

how often do you need to put the tender on? weeks? months? leave it on there?

@martincarey8620 7 жыл бұрын

I've got an Optimate, which cycles between slightly discharging and re-charging.... They should be plugged into your battery whenever the bike is not in use, and should be permanently left switched on. Mine works great....and a must-have for modern bikes with immobilisers that slowly flatten a battery. Harley Davidson's come with a pig-tail already wired when you buy them new.

@MisterMooo 7 жыл бұрын

You can leave the charger plugged in 24/7 if it's an automatic charger with multiple stages (the most important stage being 'float'). The charger will charge the battery to 100% (bulk and absorption stages) \, turn off then keep it near 100% (float/trickle stage) when the voltage drops.

@artknight3683 7 жыл бұрын

I live North of Chicago, where winter could be 5 months. The battery gets taken into my house, hooked to the tender and when it turns green, I put the battery and tender in the closet and forget about it until St. Patrick's Day, when I charge it up again. I've averaged 3 riding seasons per bat tree!