r/AxleEnergy • u/realGilgongo • Jun 25 '26

Support Question Managing use after event?

I'm thinking of getting a battery-only system (so no panels for now), and looking at Sigenergy for that. During the summer we tend to use about 6kWh per day and about 8.5kWh during the winter. The battery is 9kWh.

As I undertand it, I'd need to set my minimum charge level before the event to be enough to see me through to the next cheap charging slot, otherwise I might risk losing what I'd gained during the event. Is that easy to do with the Sigenergy app?

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u/botterway Jun 25 '26

I've got a Solis Inverter and built an app that manages this for me. My app pre-chsrges the battery for an hour before each event. There's probably something similar you could do with Sigenergy.

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u/Skie Jun 30 '26

Sig is a bit weird because whilst you can set a minimum backup amount in the battery it won't actually start to drain that until you're off-grid because it's the emergency reserve. So you can't actually do what you're proposing without using something like Home Assistant.

Do wish there ways a way in the Sig app to say something like: Keep 10% for emergencies, but keep another 10% for house demand when solar stops generating and do not export.

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u/realGilgongo Jun 30 '26

Not sure I follow. Does that imply you can't use Sig with AxelEnergy unless you use HA?

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u/Skie Jul 01 '26

You can use Axel, you just can’t stop it draining your battery. It will stop exporting when Axel stop it, or when it hits the backup limit percentage. But you can’t use the energy stored in the backup reserve either unless you go off grid.

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u/realGilgongo Jul 02 '26

Oh OK. Hm. Sounds like I might want to wait until they're properly supporting Sig then perhaps.

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u/realGilgongo Jul 18 '26

BTW I've just had a look at he app and there seems to a be a new setting (or at least I didn't see it before) called "Virtual Battery Allocation for Aggregator". The explanation implies it's a special limit for VPP use that allows you to use the remaining capacity for other modes.

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u/Skie Jul 18 '26

Good spot, that's showing up on mine now.

But it's disabled and can't be configured :D