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Anyone know the specs on these? Thanks in advance for any help. If I remember correctly they were removed from a generic laptop battery.

Getting over voltage error on charger controller. Pack is only at 12.0v Placed a 60a(charge)/100a(discharge) BMS with these parameters and now getting high voltage error on the renogy Rover 40. Anyone know what my charge settings should be for this pack? Thanks for any help. The problem these...

Thanks! Had to change battery type to "USE" and was able to change all the parameters. New settings for now until I can learn to optimize settings for these specific cells. Thanks for those numbers will integrate into my settings! EDIT: Charge Limit Voltage has to be set to 12.7. If set to 12.6...

My bad...3s pack. CC only allows to select a 12v or 24v.

I set my CC to "LI", but I am concerned with the default charge parameters shown in the photo. Are these acceptable parameters for these 18650s? If not, what should these voltages be set to? I can only change the parameters with the white background. Thanks for the help.

Anyone know what size shrink wrap I should get for a 9"x3" (20" long) pack? Gotta fig out a better way to charge this than a 5amp hobby charger.

done...in the end I am not sure this is the way to go as some suggested. Oh well, decent first pack. Did 12v (3s) pack. Just didn't think I had enough cells for a decent 24v pack. Pack has a low watt assignment.

Zipties fixed this pack up well. Good and solid now. Thanks for the suggestions.

Lost 12 cells over the two weeks. Mostly 4.16v Lowest I kept was 4.12v.

Daromer, I thoroughly believe you on this one. :) I need the drill batteries like that one Samsung I referenced earlier. Just trying to do something with these leftover cells. Prob be better off just buying another Pb for around $22usd, but before I do that will just twist out the kick pedal and...

Thanks Korishan...I did a 3s3p (does need 4p) config since I have a 3s 25a BMS. It cranks OK now, but has limited stamina. I think I can live with the limited stamina since it has a kick start too. This battery compartment is very tight; designed for 5.5"x1.5"x3.25". Note: This time I think I...

Little pack just can't do it; cranked some but acted like a "low" battery barely turning the engine over. By the time I was done trying the cells were starting to warm up. Connectors were good/clean. Guessing the cells are not rated for this current. I think that green samsung is high current...

I have the comms cable with personal edition for the APC and nothing can be changed other than when it shuts down or when to switch from the grid to backup power unfortunately; sure wish they had something to give us more control. The only useful info from Powerchute PE is battery state and time...

APC is the 1300 PRO. Anyone know charging current, no load drain and if the fan is thermally controlled on this APC? Still have a couple weeks before I commit.

:exclamation: :heart:

Thanks for the input. Currently the pack I am making is planned for a low-load (60watts) environment with a 12v inverter that alarms at 10.6v. I do have a 24v APC, but I am thinking the 388 cells are not enough to make a decent 7s and I am not sure if the inverter will tolerate 7s voltage. I...

Welcome! Here is what I used to help best sort my cells: https://www.repackr.com/#/pack-builder Several websites available on this.

I bought a 10a and a 20 for testing, but do I even need a BMS? I can;t imagine no, but some are doing this. Found one guy who put the balance cable on then removes for annual balance charge. lol

Building a small pack for an ATV that charges at 14.5v <1000mah. Some are building packs w/o a BMS which I am not keen on. Can a safe 4s really be safely used in this situation. I ordered BMS, but wanted to see what the trend is in the community. Thanks again for all the help. AA

Thanks. Zipties it is. I really want to keep a close eye on these cells when I finish this pack in a couple weeks. 12v - 288p (one row empty for front panel). I know 24 is better but I have several 12V inverters and not enough cells for a good 24v pack.