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Balancing Leaf Packs
#9
(07-01-2020, 10:28 PM)slimf Wrote: Depending on the size of your pack, the Batrium doesn’t stand a chance of keeping them balanced if the series packs vary in capacity by a decent amount. I’m afraid I’ll run into this problem myself, and with 91 modules the WM5 balance current is virtually negligible.  Batrium can balance 91 modules 

>packs vary in capacity by a decent amount
If packs/cells have different AH to a significant degree - they should not be put in series as a battery in the 1st place as its not a health battery situation.  Its not about balancing.    You should test and mix/match (maybe parallel groups of cells) till each one has similar AH to be put in series for the desired voltage.   Then you'll have a good battery and balance will be fine.

Similarly if you have self discharging packs to a significant degree - they should be replaced as you cannot have a healthy battery with this situation - and it indicates near-term-failure. 

Once you have healthy cells - Batrium can easily balance 91 leaf modules - they're only 66ah    I have 84 packs of 100p (260ah) with Batrium WM4 restricted to 1a and 55C and there's no problem balancing them.   WM5 might take a little longer (6ah vs 28ah /day OR  0.3a vs 1.2a - https://www.batrium.com/pages/watchmon-comparison) but that's plenty to balance healthy cells.  
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Messages In This Thread
Balancing Leaf Packs - by ZimInSeattle - 06-29-2020, 02:41 PM
RE: Balancing Leaf Packs - by OffGridInTheCity - 06-29-2020, 03:05 PM
RE: Balancing Leaf Packs - by ZimInSeattle - 06-29-2020, 04:51 PM
RE: Balancing Leaf Packs - by OffGridInTheCity - 06-29-2020, 05:04 PM
RE: Balancing Leaf Packs - by ZimInSeattle - 07-01-2020, 12:49 PM
RE: Balancing Leaf Packs - by slimf - 06-29-2020, 09:34 PM
RE: Balancing Leaf Packs - by Redpacket - 06-30-2020, 01:20 AM
RE: Balancing Leaf Packs - by slimf - 07-01-2020, 10:28 PM
RE: Balancing Leaf Packs - by OffGridInTheCity - 07-01-2020, 11:49 PM
RE: Balancing Leaf Packs - by slimf - 07-02-2020, 09:09 AM
RE: Balancing Leaf Packs - by ZimInSeattle - 07-02-2020, 12:39 PM
RE: Balancing Leaf Packs - by ZimInSeattle - 07-04-2020, 12:42 PM
RE: Balancing Leaf Packs - by OffGridInTheCity - 07-04-2020, 03:23 PM
RE: Balancing Leaf Packs - by slimf - 07-05-2020, 05:29 AM
RE: Balancing Leaf Packs - by ZimInSeattle - 07-05-2020, 02:23 PM

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