This battery reconditioning program exceeded my presumptions. It worked on any drill battery, several AA and AAA batteries batery.repair and any camera battery. The steps are simple and the act itself is exciting to do. No matter what type of battery you`ve got, it is sure to function again!

Good video. More tips for working with batteries: paint the tops of the terminals red and black for positive identification, no drinking while working with batteries, remove all your jewelry, and cover the handles of your tools with electrical tape.

Take your negative from the charger and move it to the negative terminal of the third battery so that you are getting balanced charging. Do the same for the inverter so you get equal discharge from the batteries. Otherwise you will wear out the 1st battery prematurely. In my experience those small inverters are not pure sine wave and put out more like a square wave... so many of your appliances with motors will not like that and you risk messing up your expensive electronic gear (TV, stereo, Xbox, etc.) if you are not using a ton of filtering to smooth out the AC. Don't expect to get 4KWh from this system, and run a fan on that inverter when pulling a load as it's going to get HOT (that's where much of your battery power is going). Put a piece of slate or heat shield between it and the battery case it is sitting on so it doesn't melt the case or cause a fire.

Thank you for taking the time to film and share this video

Only one small criticism - the positive inverter cable should be attached to battery 1 positive, and the inverter negative cable should be attached to battery 3 negative, rather than both cables being attached to battery 1, with batteries 2 and 3 hanging off battery 1. That way the inverter power HAS to flow from all three batteries equally. This method of wiring takes out any imperfections (resistance) in the connections between the batteries. The mains power charger wires should be connected in a similar fashion so all batteries share the charging current equally.

used for emergency back-up. plugged into 110v wall charger.

Inverters come in various input voltages, from 12 to 48 in a common household system. you can also get an input voltage up to 240, and possibly higher. These higher voltage systems generally are for a large household or small commercial system using a net metering system and selling power back to the utility.

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Great video! a HUGE word of warning, DO NOT under estimate the power of a 12 volt battery. I had a battery in a 72 Chevy blow up and blew a hole in the hood of the car. Back when they made them out of steel.

Your battery is connected wrong you need to pull from the rear with one cable either neg or pos to the front and use the front pos or neg to the source. Otherwise it's going to give you a unequal charge and hurt your batteries. Think of the batteries as cells in a big battery and the post are at each end of the battery.

Honesty you are the best I have been looking for a video like this one you have nailed it. Thank you sooooooo much I can actually do this on my own. You definitely have a new subscriber. Thanks

Very good and strait forward demonstration.

Thank you soooooooo very much. I watched my share of useless videos on this topic before finding your video. Your video was clear concise and easy to understand......

In order to have balance on the batteries, you need to connect positive of the inverter to positive of the first battery and the negative of the inverter to the negative of the last battery.

everything you are doing looks good I have to in my living room and I know that is a no no. the charger I had on them was a marine. but I needed it for my new radio. I used it for a long time just on a lamp when the power went down

I have tryed different configurations with three batteries on my camper solar system. I have found connecting the load to the positive and negative of the middle battery works the best. I have never seen a video showing this setup.

Good stuff my friend these guys have never got there hands dirty yet screwed in a bolt in there lifes..they dint know crap thanks for ur video..keep up the good work....using my wifes acct..

You'll get more even discharge rates from the three batteries if you connect the inverter with positive at one end of the bank, and negative at the other end of the bank. Otherwise, the resistance in the connecting cables will cause the second and third batteries to discharge at slower rates, and can cause heating of the connecting cables. The same connection arrangement is critical for charging if you want all three batteries to be charged to the same level.

Super-educational. Thank you.

best explaination i got from yt so far. good job

If you want to be sure that you charge and discharge your batteries equally you need to use a pair of shunts which connect to each battery equally. When going battery to battery in the way shown there is a MINUTE difference in the amount of power going to and from the first and last battery in a parallel system (which in most situations you would not even notice) due to the difference in the cable length which loses voltage in the form of heat dependent on the distance traveled (a common problem power companies have with distribution lines). To be anally retentive about your wiring in parallel, take 8 cables of EXACTLY the same length and connect them all to the batteries, but not from battery to battery. Instead run each pair of cables to two common shunts (making sure all positives go to one and all negatives to the other) then connect the charging system and the inverter to these same shunts, also positive to positive and negative to negative. This is a lot like putting headers on your car engine, they help to even the load on each cylinder, or in this case battery, to insure that each battery is charged and discharged equally. You would also connect the 12v power out to the same two shunts. This method also lets you remove or add a battery to or from the system without taking the system offline. This makes your system "hot swappable," to borrow a phrase from the computer industry.

Do your homework… the positive and negative should be connected at opposite ends… or move negative wire to inverter down to negative terminal on right battery… yes it makes a difference, you wouldn’t think so just being a common ground but research it and see

Hey brother, enjoyed your information, thanks for sharing, keep looking up!

thats a great little back up system. simple systems like this are usually the most useful and practical. every house should have this installed. It looks like a $350 system, worth every penny when your power goes out.

Great Vid!! Right to the point, clearly explained, no bla bla bla. Very educational and easy to understand. No stupid background music. No 2 min intro that has no purpose. Just knowledge/info that is very useful. Congratulations.

I know this is an old-ish vid... But MAN you got some one handed SKILLS !! Nice vid, thank you very much for the info.

Thank you very much bro, answered my questions. Keep posting videos.

I'm putting together a similar system right now... Everything I've read is that you always use the same batteries for the battery array because they may have different charging characteristics. Same model, same capacity, same voltage.... basically make all the batteries identical. Particularly the capacity. I think someone also mentioned that you "draw power" from both ends of the battery array, not the last battery in the series. Neg lead on one end and the pos lead on the other end.

I have 5 batteries 12v in parallel with a 2500W sine wave inverter. one 24v 270w panel mppt controller works well even in cloudy weather. 50l 1500W hot water spoiler works well, etc., etc. in the summer I charge three electric bikes from an inverter with their own chargers.

You could even wrap the end/half of your wrench in electrical tap just to be sure

i was looking for that kind of video! nice explanation! thanks!

FOR SURE A VERY GOOD PRESENTATION

you should have installed the charger and inverter negative post on the opposite end. like that all battery are charged equally.

Excellent instructional video. Clear, step by step instructions. Great gob! and thanks! 😃👍

Great video. Thanks for sharing. Can you explain amp hours? With your configuration, how long will the system be operational with a constant 8 amp draw?

hi would it be beater to charge each battery separate with an auto disconnect and reconnect when charged

Just build a Battrey box for all cells then vent it outside with dryer vent and a small 12volt fan and dryer vent with flaps. Maintain water levels on all Battreys use distilled water and don't overfill cells mount inverter outside of Battrey box to avoid explosions. Use a socket and a ratchet and short extension tape on tools would help avoid accidents. I guess for a amature set up but you are venting fumes into the house mount stuff down so during a storm or earthquake your Battreys don't fall or get damaged your primitive setup could use improvements

Great video. Inspired me to get started on this project for my family for emergency power. Don't worry about the negative comments. I've got an electrical/electronic background under my belt, and your system is good. As a matter of fact, it Inspired me to do an additional job to go along with it and make things just that much better for my system that I'm building. And the good thing is that you included a charger on top of the battery box. If there's an emergency and your need to top of the charge, a simple extention cord pluged into a generator is all that you need.

Only two concerns with this installation one under charge batteries vent hydrogen 2 conflicting metallurgy would cause electrolysis ie oxidation oxy ban would prevent this found in the electrical aisle at your local hardware store design for Union copper to aluminum but good for electrolysis applications:)

Do you have any video were you actually plug fridge stove and air conditioning unit and can I plug this to 100 Solar panel? Thanks

Thought inverter leads had to go on terminals on negative on first battery and positive on last battery,notice you put inverter leads on terminals on last battery only.good vid ,thanks for the info

i was searching so hard to find this exact info thank you

This guy is awesome he gave me some info I know but WOW he taught me gave me a better idea for what I need. Thank you sir

++You should have connected the bars of the + lead to the upper left-hand corner. As you did, and your negative lead to the ottom right and corner, for your charge control and inverter. In order to keep each of your batteries. Equally charge and discharge. A common mistake. This lets the current flow through all the batteries. Equally. When using more than one battery. Always connect your leads to the opposite end the batteries. Whether it be in serious or in parallel. As you did there..

the more batteries you add its still treated as one big battery and the inverter should be connected to the first one and last one in line NOT just on first one.

Great video. So connecting the batteries in parallel only increases the amp output?

What many don't understand is that an inverter is inverse proportional to the current output to the current input . Say you want 400 watts output at 120 volts . The inverter will draw around 35 amps or 420 watts from the battery bank . The higher the power output you want the more power from the battery bank it takes . Then there is the type of inverter you need to such as either modified wave form or a true sinewave inverter as some electric appliances will work with a modified sinewave inverter while others require a true sinewave inverter . But there again remember that what is needed for the house hold needs is less than what the inverter draws from the battery bank .

Just made a new video of our 1200W version installed in a truck with a solar panel. kzfaq.info/get/bejne/fdyVnJNltb3PoZs.html

Quick question from a newbie! Doesn't this method result in "unbalanced charging/draining"? ie, the first battery in the system will drain more quickly and charge more quickly. Doesn't this put more strain on the first battery?

Smart and precise video.

why was it plugged in to 110 outlet before it was finished... just asking for a friend

Posting so people can learn from our mistakes... I used similar Walmart marine batteries (24DC) for a small solar system. There are two important things to be aware of - the amp hour rating of these batteries is based on a 1 amp draw which would never happen - actually capacity is much less than the rating under normal use (battery capacity is not static - it's based on draw). They also have thin plates which means they won't last for many cycles, I barely get a year or two from mine with light use. For the same price I could have purchased 6V GC2 (golf cart batteries) from Sam's Club, which have thicker plates, an honest rating (C20) and a longer cycle life. Having said all that, if you're keeping yours charged until there is a power outage you won't be as concerned with cycle life. I recently upgraded to Trojan T105-RE batteries which cost twice as much but should last 10x longer.

It's callled parallel conection

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Nice video and explaination

Divide your amp hours by 50% because your inverter is designed to cut out when your battery bank output reaches around 11 volts. In other words, your battery bank still has half it's amp hours left when your inverter cuts out. That's the problem with these systems. If the inverter manufacturers made them so you could adjust the cut out voltage down to 10 volts before it stops producing 110 volts then you would get more hours use, but with traditional batteries they would not last as long. Lithium ion batteries can be drained more and it won't affect their life as much as with lead acid. Also, a short term startup load of some devices can cause the battery voltage to suddenly drop which can trigger the inverter to stop producing current. I know because I have had a small set up of 4 x 100 Amp hour batteries and 9 solar panels connected to a 3000 watt inverter since 2011. I used my set up to power my compressor and power saws when I build my house. I was resetting my inverter constantly. I calculated that another 8 batteries would have done the job, but at $200.00 per battery the cost is insane. Solar and battery backup isn't cheap. You can add a wind turbine for 1200.00 bucks, and that would help when you have enough wind. My system would not run a 1500 watt heater for more than 10 minutes because the voltage would drop below the tolerances of the inverter. In mid winter the solar panels would not keep up to the demand of 6 x 8 watt LED light ceiling lights in my kitchen so the batteries would run down and the inverter would kick out. Calculate how much power you need, then multiply the number of batteries x 3....that should do the trick. Also get twice as many solar panels and be prepared to buy more. In other words, if you are purchasing 350 watt solar panels, consider that you will only get half of that from them for 6 hours a day in winter and 10 hour in summer, and you should be about right in your calculations. I'm deliberately not being overly scientific.

One suggestion: the inverter should better be connected to the middle battery. This avoids the pair of jumper cables connecting the second and third battery carries twice current as the one connecting first and second battery.

The point is to solar charge or. Car runnig charge alternator......so you can use anywere

The gauge of wire looks kind of small, what are using for wire size?

The amount of rocket scientists making comments here is astonishing

How come you didn't hook up your inverter connections to both outside batteries as in neg on one and positive on the other. That way the draw is equal on all batteries.

wing nuts work great. What did u do? Pound your thumb? I like the set up. could use it on my out side wood boiler.

Nice video very clear and to the point. Thank you.

the vid was good, but connected in that fashion the batteries will not draw evenly. he should have attached the first inverter lead to the positive or negative of first battery and the second lead to the opposite terminal on the third battery. that way the charge and discharge hits evenly across all three batteries. that holds true no matter how many batteries you have in the bank. Also, i might point out, though his batteries were all the same, it is recommended that you buy all batteries for the bank at the same time and also buy the same model batteries so the amperage is the same for charging. another thing to point out is that those are lead acid batteries. most inverters will cut off at 10.5 volts, but if you buy AGM batteries, the voltage stays 12 ish while the amps are drawn, IE, longer run time... most of those batteries are rated in amp hours not CCA.

Is there a something I'm missing? I see relatively few people connect chargers and inverters to opposite corners of a bank. Seems to me it would be better to connect to the charger to positive on one end of the bank and the negative of the other end and connect the inverter to the two opposing contacts. Seems to me you would give yourself a better chance of feeding or drawing power from the bank more equally because it would have to travel through the entire bank. In perfect world I wouldn't see any problem the way it is done here. But without intensive electrical testing there is nothing to say that resistance in the cables, connections and even the batteries themselves is equal.

Hi mate what would you charge to ship one of those trickle chargers to Australia for 240 volt .

Jupiter 5000w,12v Inv. 440Am,12v Batt. What breaker size? From batt to Inv?

Sir where can I purchase all this equipment it would be very nice if you could send me a list of the things you used so I can purchase it in case my lights go out again I would really appreciate it thank you

looks good but that is not a 4kw hr battery bank, i know its hard to determine those walmart batteries capacity, but i have 20 of them and each battery makes 1200w but ( you can NOT let it go below 50% or that will permanently kill the battery) so you only have 600w usable power. And that 600w usable is USAULLY only the first discharge because batteries degrade over time especially lead acid, lithium last longer but cost 4 times more. but overall these batteries best bang 4 buck especially since they at every local walmart for 100$ and 3-4 yrs might have to replace longest i heard was 8yrs with good maintenance (never go below 10v and charge up everyday)

Thanks for the video!

how long does it take for the battery bank to run out?

Wouldn't it be better to hook the charger differently? Say positive ( from charger ) to #1 battery and negative to #3 battery. In theory wouldn't this spread the charge equally over the bank, rather than the other 2 leeching off one ? Also hook the inverter the same way ? Really curious about that. I enjoyed the video also, thank for the ideas sir

Can I hook this system up to solar panels Instead of using the outlet ? The gaol is to use free energy rite?

I use two T-105 Deep-Cycle Flooded golf cart batteries connected produce 12 volts. They have deeper cycle rating and work far better for this type of solution, Go Power! GP-RV-80 80-Watt Solar Kit with 30 Amp Digital Regulator.

great basic back up system ! don't know if inverter is true sign or not. important for electronics. They make inverter/chargers so only 1 unit. come 24V 36V 48V and some of them have auto transfer switch which makes a UPS back up. only thing I would add to your system is a volt meter and a surge protector fo the charger . can use 6V golf car batteries also.

You still have to plug in the inverter into the power point. How would that work in an emergency?

New version with solar charge controller added: kzfaq.info/get/bejne/rqiiZNilycydZHk.html

You should have the inverter connected to the + and - terminals of the batteries at each end of the bank.

So this is tested, doesn't break easy? Still working>? Thanks!

What do you do for the hydrogen gas that is given off from the batteries?

think what you were trying to say was that you connected everything in parallel : positive to positive to positive and neg. to neg. to neg. if you went neg to pos. to neg to pos. to neg to pos. you would have been in series. and the voltage would not be consistent .) in parallel voltage is constant and amperage divides between loads, in series amperage is constant and voltage divides.

To connect your lid the positive should go to plus on the left battery but the negative should be connected to the battery on the far right, this will equalize the charge/discharge through all batteries

At 4:45 he's talking about not using a longer wrench when tightening battery terminals... Guilty. I was wiring up my car stereo when I was 16. Both ends of the crescent wrench met with the posts. It turned the one post into mashed potatoes. My inline fuse was over a foot down the cable and spontaneously combusted. Cool.

No no negativeiv should be hooked to 1st battery not the 3rd battery positive is hooked up correctly. Your 2nd battery will not charge correctly.please respond to me I will explain it to you.

You need to hook positive at one end of your bank and negative at the other end of your bank both inverter and charger so you're battery bank current is equal throughout or you will overwork your battery bank unequally. Remember path of least resistance.

thank you for this video is nice I would like to ask you a question can you use the battery charger on while you are using the inverter with refrigerator on can the charger stay on the on position it won't burn the charger thank you again

Perfect video! thank you in advance of my question.. I'm missing the step how the charger and the inverter connect to each other before they go to the battery terminal. Thanks again

how long does it run your fridge for on the batteries? 3-6hrs?

How many battery's could be need for a 3000watts inverter

Make sure everyone who watches this video knows when you use automotive batteries you only get 20% of your amp hours. AGM is 50% and Lithium is about 80%. Drawing power below the % capacity will kill your batteries in less than a month. I recommend sealed AGM for this and most other applications. (100 amphour rating = 50 usable amphours) Lithium would be good for Off-grid solar generators and flooded leads are really only good for engines

From a safety standpoint, would it be better to put the negative on the wall side, Just curious. I realize both both poles will do harm, but if I remember correctly, power flows from negative post to positive posts.

Suggestion; invest in a tripod for your next video.

Nice explanation but... If one places the negative at the bottom left battery's connector and the positive battery connector at the top right battery you get a more even and average draw from all batteries AND a more equal distribution when charging. Also...the title says 4kh! I see far less. Cheers. PS. I edited because I can't spell for toffee.

Obviously you know what you're doing but every time you touched a bolt I flinched :) Electricity scares the hell out of me.

Great video

Why not use a solar panel for the trickle charge?

4 kWh not kW/h. KWh is quantity of energy, kW/h is the rate of consumption of energy.

Pls what are the materials needed to construct this. Can you pls send a list. I'll highly appreciate

Yes, tricky to do that with only one hand 😏. I made the mistake of using a long spanner and had that exact experience. Scared the crap out of me 🙈. What gauge wire are you using? thanks

To ensure proper charging to the batteries and to ensure the batteries are all charged equally, when connecting the charging unit, you need to connect the positive lead from the charging unit to the positive post on battery ONE. Once that is done, connect the negative lead from the charging unit to the negative post on battery THREE. Connecting the charging unit this way ensures that all three batteries are charged equally at the same time. Connecting the charging unit as you show in your video will put undue stress on battery ONE and battery ONE will receive a full charge before either of the other two batteries are charged. This produces batteries that are NOT charged equally and any given time. Positive post on battery ONE, and then negative post on battery THREE is what you should be using to achieve equally charged batteries. The batteries will also provide equal voltage and current across all three batteries this way. Otherwise, a very interesting video.