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Testing BMS for portable battery
#21
Odd how they left one resistor out of the parallel sets for each cell..... Also 121 lited resistors are 120OHM resistors in parallel. which works out to 20ohms. Now that being said if it only balances when at or over 4.2v then the current that will be removed would be 210mA. I have one of the really cheap voltage checkers that will balance at the at rate.
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#22
My main problem with the unit is that it doesn't power a very basic load when connected per the instruction manual... Not sure if defective

Details outlined in post #19
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#23
(03-29-2018, 07:43 PM)Crimp Daddy Wrote: My main problem with the unit is that it doesn't power a very basic load when connected per the instruction manual...  Not sure if defective

Details outlined in post #19

Yo Crimp Daddy,
Since your last post on March 30th, have you had any luck with this unit or had it replaced as faulty?
I'd like to order one but am concerned by your issues!
cheers
emmsee

(02-17-2018, 09:55 AM)Wattsup Wrote: I've connected the BMS8 to this 12v 60ah LiFe pack.

Have had little time to test it as such but so far it seems to actively balance as shown by the red led in lower left of display.

Noticed sometimes it makes a high pitched squealing sound when balancing?





First thing i'll do is test low and high voltage cut off.
Yo Wattsup,
Have you had a chance to test this unit yet?
I like the specs but don't want a dud.
Also is this BMS suitable for 18650 cells/batteries?
Cheers from another Aussie
emmsee
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