You are awesome! My brothers are all into computer/car tech stuff but are hard to reach so I’m so glad I found your video! It’s super informative and easy to follow! I’m going to watch all of your videos just to learn new things. Thank you!

For many years I have charged them at 10% of AH rated value for 8 to 10 hours, and had good luck and batteries last for many years, use a rotary timer to shut the charger off

Thank you! I did not know a higher amp output could damage a battery!

Nice tips thanks, My battery is Gel Valve Regulated and my charger is 12v -6amps is that ok for a 30ah battery? Do you also leave a battery like Lead Acid or any deep cycle ones unused for a certain period of time is it safe to stock or store a battery as a Reserve power bank if there will be power outages in our area? Thanks

How much time would it take would it take to charge a 12v 12ah SLA battery using the SLA smart charger?

thanks for the idea

I have a 12V 18ah battery. What is the best suitable solar panel to charge it?

I don’t understand the charging time formula so I’ll ask. For alarm panel I have a 6 volt 1.3 amp rechargeable lead calcium battery. How long do I charge this for Thanks

I use (2) of these batteries in series to power a three-wheel golf push cart. A round of golf normally lasts about 4 hours. Should I charge the batteries after each use? You also recommended not overcharging them. My charger has a red/green light to indicate when they are charged. With this setup how do I avoid/know when to turn it off to avoid overcharging?

Hello, I’m wondering if I bought the black battery in your video to put under my driver seat and connect wires to power a siren for the car would that work?

But where can I find the amps on my two batteries I have 12v 7ah and 12v 9ah because I want to buy adapter want to get the fastest charging adapter I can use.

Thanks for the video. I just recently bought 2 12v 10ah lithium batteries. Do I need to charge them out of the box - or do they come precharged?

I have a large Sears auto charger. It is stamped Output 12VDC 2/10 Amp. It has 3 settings manual, auto cut off-regular and auto cut off-deep cycle. I’ve used it to charge both my regular Car lead 12V and regular motorcycle battery. I’m sure it will work on the e-bike lead battery but what about a lithium battery?

Also Is the a adapter for the adapter instead of connection I can connect a connection that has alligator clips on the other end??

very informative. I did not know the lithium battery pack will come with a bms and a charger port. I thought I had to find one with it.

Wondering how to charge the 7Ah SLA with a small solar panel cannabalized from a solar light from Harbor Freight. Do I need a solar controller? Can I just connect the panel directly to the SLA battery? Good video Thanks!

Very helpful 👍 🇺🇸

Where can you charge a battery can you charge it anywhere safely? I live in an apartment

thanks for help

hi i have a container thats made for the bike, it has 2 batteries in it. i replaced one old dead one with a new one and charged it 2 times for 10- 16 hours but with one old dead and one new one i only have 1 minute of charge? why do i need to remove the old one form the container. or does it have to have 2 working batteries in the case

I have lead battery with rating : 12v9ah. Shall I use 12v, 2A to charge? Or shall I go higher voltage (say 14v, 2A)? I don't think my chargers have a light for when a battery is fully charged. How to know a charging cycle is complete? Thanks!

Can the lead acid battery or lithium battery work the dc flyback driver ?

How about gel type batteries?

When you use 3 12v batteries wired in series to make a 36v bank. Do you take it apart and charge each 12v battery separately? Or can you charge all of them together with a 36v charger?

Can you use car battery chargers to charge these small 12v SLA batteries? (like from a jump starter battery pack). Thanks and very good video.

Question. One of my garage door batteries is rated 12v 2.2ah. I bought a 12v 2A charger, charged it for two hours but the voltage on the multimeter says 10.6V. Does this mean the battery is dead? Also after the charge, the battery temperature is warm.

can i use a o-30 volt power dc power supply to carge a lead battery

So if I have a lead acid battery, I use 12 V to charge it right?

For longest life, with either Lead Acid Sealed, or a Lithium Ion Batteries, charge slowly, 2 r 4 a. m. p. I use a 5 amp charger for a Interceptor 2 sealed jell 12 volt and 20 A H. N. B. 12200 NB12200

I didn’t charge my kids power wheel battery for one year the batteries dead can I still charge it?? It won’t charge with the charger

hi, can you charge a 12v9ah lead battery with a charger for a 12v10ah lithium charger?

Hey, how many hours will it take to charge a 12v 18ah battery with this smart charger?

I am building a moped with 4 12v lead acid batteries. It will be 10ah at 48v. How can I charge all those batteries at once? Thanks.

🔥🔥🔥🔥

Thanks, very helpful. 65 year old single woman that is not smart about this stuff.

good work

OK, Charging several 12V batteries, and I do not care what the manufacturers say. You must use a constant current, constant voltage charger on SLA, AGM, LIPO, or any other rechargeable battery. Why? This makes the battery last much longer that if you used a regular lead acid charger of any type. Between Amazon and eBay, you can find practically any voltage charger in existence. But you must find a constant current and constant voltage charger to maintain your battery for long past its warrantied lifetime. Don't be cheap on the charger! Remember, you get what you pay for, especially with Chinese made chargers. LiPo batteries have a problem, some Chinese make outlandish claims on their battery capacities, some by a factor of four! An 18650 battery from China rated at 9800 Mah, have been checked out at less than 2,000 Mah on the bench. The weight of the battery determines the amount of current it can supply. If a 9800 Mah Chinese battery weighs less than a Japanese battery rated at the same current level, the heavier battery wins! Read the fine print under the ad giving the specs on that battery that looks so very affordable. Chances are that battery is a lightweight fake. (My opinion, my experiences). Oh, it may work well enough in a flashlight, but not for as long as they claim. Those bright yellow or red batteries ("eye candy") from China just do not measure up to Japanese batteries or some South Korean batteries. Look at the weight (in grams) when battery shopping, or for what its worth, in Wal-Mart and buy the heavier battery in its class (including car and marine deep cycle batteries). Bring a fishing scale of up to 60lbs if you have one for the heavier batteries. If a store complains, walk away, they have something to hide. In batteries, weight has everything to tell about a battery.

How long do you charge a dead dead battery ?

What if u don't have a smart charger that doesn't shut off when it's full? How long for a 500mAh for 12votl 8a

Aren't you supposed to disconnect the negative first, before the positive once it's charged?

(AH) Amp Hours has nothign to do with time. 20 AH wil not last 20 hours....

Can I use a 12v, 3.3ah charging adaptor to charge a 12v 7ah lead acid battery