Overkill SOC Reset

LivingTheDream · Aug 28, 2023

Hey everyone,

I have two BMS from Overkill and I’m not a huge fan. They’re always changing their values on me and such. Last time I was on shore power and had a fully charged system, I reset my Victron Shunt. I’m doing great with my consumption and maintaining a full charge every day, weather permitting. How do I rest a 100% charge on these silly BMS’s? Ones showing 169.37Ah out of 280 possible and the other shows 235Ah.

timselectric · Aug 28, 2023

Try changing the capacity setting to something else. And then change it back.

LivingTheDream · Aug 28, 2023

timselectric said:
Try changing the capacity setting to something else. And then change it back.

Thank you, I’ve done this. It’s actually part of why I don’t like these Overkill BMS’s. They randomly change settings on me. When I do this, it does bump the capacity up a tad, but nowhere near 100%.

timselectric · Aug 28, 2023

LivingTheDream said:
Thank you, I’ve done this. It’s actually part of why I don’t like these Overkill BMS’s. They randomly change settings on me. When I do this, it does bump the capacity up a tad, but nowhere near 100%.

Sorry, it was worth a shot. It works on some BMS's.

timselectric · Aug 28, 2023

Another option is to set the over voltage protection to the current cell voltage. This alarm should reset to 100%.

42OhmsPA · Aug 28, 2023

Deep in the settings there are options to set soc based on voltage, at least in the overkill homegrown app. I'd grab a screenshot but I ditched my bluetooth so I could have comms with solar assistant.
You need to set your 100% value to whatever your full charge cell voltage is.
Ps - I've never had an issue with settings changing on 4 of my JBDs, they just work.

SeaGal · Aug 29, 2023

timselectric said:
Try changing the capacity setting to something else. And then change it back.

42OhmsPA said:
Deep in the settings there are options to set soc based on voltage, at least in the overkill homegrown app....
You need to set your 100% value to whatever your full charge cell voltage is.

These suggestions should work.

Whenever the BMS parameters are updated, the BMS will re-adjust the SOC based upon the voltages that have been defined.

So, check what your SOC voltages are; hit the Write button and the BMS will set its internal SOC based on the max cell voltage.

Overkill SOC Reset

LivingTheDream

New Member

timselectric

If I can do it, you can do it.

LivingTheDream

New Member

timselectric

If I can do it, you can do it.

timselectric

If I can do it, you can do it.

42OhmsPA

What's in a title?

SeaGal

Photon Sorceress

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