Yhkam 60290 12s1p battery pack should I or how should I add SAB 60280s?

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floydR

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Aug 23, 2017
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1,314
The 12s1p battery pack has return 76Ah, 79.48 Ah on its first two discharge tests. Ant BMS 150A, 3000watt 36v reliable inverter, 1500 watt heater. 40.8v start voltage 36.5v when BMS shut the discharge down.
I have 14 extra SAB cells.
1) Should I add the cells in parallel to the existing battery pack?
2) Make a new 12s batterypack with the SAB cells paralleling the balance leads?
3) Make a new 12s batterypack with the SAB cells with BMS?
4) Make 3 4s1p or a 4s3p out of the SAB cells?
 

Overmind

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Jan 16, 2019
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If you have a functional system with 12 cells, just pair them and double the capacity (you'll have close to 160Ah). Put 2P and then 12S. And you have 2 more as spare, which is ideal.
 

floydR

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Aug 23, 2017
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The 12s1p pack is made from YHkam 60290 cells 90Ah original capacity cells. The 14 SAB 60280 55Ah cells I think I will make into a separate 12s1p pack. Maybe parallel the balance leads and main positive and negative leads. I think the 10 mm difference in height will cause more trouble than it is worth.
later floyd
 

Overmind

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Jan 16, 2019
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I used pieces of wood below to balance height in such cases. There are also Z-like metal connectors you can user but they may be hard to find to the exact specs.
 

Redpacket

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Feb 28, 2018
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Yes put them in parallel.
But before connecting the wires, bring the state of charge (cell voltage) to be equal.
 
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