Growatt SPA3000 with Seplos BMS not charging

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lhudson

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Apr 27, 2023
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Hi,
I recently acquired a Li-Ion pack with a Seplos BMS. I've got it talking to the SPA via CAN and it seems to be talking ok. The SOC and voltage are all displaying correctly on the SPA. When set to load first the SPA pulls from the battery fine and works as expected. When the time comes for the bat first mode though it doesn't charge the battery... Instead it just stops discharging but won't actually charge. Has anyone seen this? I wonder if it's a setting in the BMS somewhere? Thanks
 
Looks like it charges to 3.65v but no more. Is there a setting in the inverter for this? I don't see any voltage settings when running in lithium mode
 
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