What kind of charger?

Hi Group!

I'm assembling a battery backup block with reclamed panasonic 26650 cells i got in hilti's battery packs i bought a 4S BMS and plan a 4S/4P pack. i'm new at this so i'm woundering if a little wall adaptor could do the trick to recharge that pack?

Thanks in advencefor your advice! :huh: :huh: :huh:

P.S. Sorry if this is full of writing mistake french is my first language!

A little wall adapter could charge this pack assuming you do NOT exceed the top end voltage of each individual cell, and the total pack voltage.

With a wall adapter, you only saftey device is the BMS, and IMO not the most reliable way to protecting the pack, but it does work. That is how the hover-board packed were charged...

Have you considered using a "Hobby Charger" or a "Balance Charger" ? It's not as convenient, but it sure is a better option if you build the packs with balance leads.

What model of charger would you recomend

all i have is a wheel chair charger Invacare model 16810 24v/8amps that i use for my 7s/8p pack that i built for my e-bike and a 12 volts PS3 power supply 12v/30some amps.
i also have a couple of 24v charger 1.5 and 2 amps

Look at cheap rc chargers like the Imax B6 they can also balance charge

Do you have a budget in mind? These things really range in price... $20 to $350 is your working price range for a balance charger.

Many many hobby chargers to choose from. I am a bit particular to the iCharger line, I have had good luck with them.

I also have a $25 Accucel 6 and for the purpose of charging a battery, also works just fine.

The bulk of balance chargers on the market are 6s, with a few 8s and 10s options.

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jdeadman said:

Look at cheap rc chargers like the Imax B6 they can also balance charge

Click to expand...

I think SkyRC is a good company but too many Imax B6 clones on the market. Be careful if you go this route. The fakes are junk.

Turnigy was my go-to brand for budget stuff. I would start there, perhaps an Turnigy Accucel, iCharger, or something from ISDT which I haven't tried yet.

Considering the OP has 7s packs too, it might be worth his while to get something with at least 8s or 10s support.