question

alexanderr avatar image
alexanderr asked

Pylontech battery stack

Hi,

Is it possible to feed our stack of 7 Pylontech us2000c batteries into the top and bottom simultaneously using a busbar and two battery feed cables?

If so, will this double the amps we can pull and push from the batteries?

Lithium BatteryPylontech48v battery
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2 Answers
nickdb avatar image
nickdb answered ·

It's not uncommon to wire a pack with "top and bottom" connections, it is also documented in their ops manual. In reality you should be sizing for system current.

Their example for the US2000C has 6 batteries in a stack, whether you can go 7 really depends what you intend to pull from it, do the math, and if in doubt just split the stacks.

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kevgermany avatar image
kevgermany answered ·

It gains you nothing. If the cables are properly sized, the current limit is what the battery makers say.

Ideally you'll have a negative and positive busbar with equal length equal sized cables to the busbar. Then connect loads to the busbar. Battery/busbar cables should be sized for the current of a single battery. Busbar/load cables should be sized for the load on the cable.

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