Sok battery in parallel connection

Goodmorning to you all !

A SOK battery 206AH and a Maximum Continuous Discharge Current of 100AH put in parallel connection, will the Maximum Continuous Discharge Current become 200 AH ore just stay 100 AH ? the marine version better i you want to put them in series connection ?

Thanks for any respons.

When put in series, the voltage adds up. And amperage stays the same.
When put in parallel, the amperage adds up. And voltage stays the same.

timselectric said:

When put in series, the voltage adds up. And amperage stays the same.
When put in parallel, the amperage adds up. And voltage stays the same.

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thank you , but will the maximum discharge ad up too ?

RJR said:

thank you , but will the maximum discharge ad up too ?

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In parallel, yes.
You will have a max discharge of 200a.

timselectric said:

In parallel, yes.
You will have a max discharge of 200a.

Click to expand...

Maximum Continuous Discharge Current ?

Yes

RJR said:

Maximum Continuous Discharge Current ?

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People start calculating how many amps they can pull continuously like this and then get disappointed when a BMS disconnects on them because of a situation that caused one of the BMS to get hit by a 100A load, which can still shut them down...

If you're pulling a lot of amps, don't skimp on usage of busbars, use equal wire lengths, high quality wire/crimping, etc (read Victron Wiring Unlimited, you don't have to spend anything to do it). Understanding current sharing is important or following a design that manages this issue.

But yes in a perfect design the loads would distribute nearly evenly between the two battery packs, so that they would not hit their 100A limit until you pull around 200A total.

EDIT: I design my systems to use less than half the "max", more like a third... those MAX specs will help you handle surges like motor startup inrush currents that you didn't know exist. If you use nearly 200A@51V from 2 batteries sustained or often I doubt it will go well.

Agreed
Maximum discharge should only be factored for surges.
Unless you really expect to only need power for an hour. And only need that a few times a month.
Otherwise plan on less than half, for longevity.
I usually run less than 15%.