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diy solar

diy solar

Using supplemental equipment with a Zketech EBC A40L

DIY Senior

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Joined
Aug 25, 2022
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Hi all,
Has anyone used an additional cell capacity tester in parallel with a Zketech EBC-A40L to charge/discharge at a higher C rate? Both are fully programmable to 5v...the A40L to 40a and the other to 50a. I haven't tried it yet but it would make testing this batch of 306ah cells a lot faster. I'm curious about the graphing accuracy, if each would do only their own or the combination.
Anyone with experience or comments? Thanks!
 
Problem is the current loading has a feedback control system to maintain the set (40A max) discharge current. This is a reference shunt resistor measuring load current that is amplified by an op amp that drives the load current MOSFET gate control.

Any additional parallel load device will likely have similar feedback control on discharge current. The two feedback systems put in parallel will interfere with each other likely resulting in unstable control of load current.
 

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