Deye inverter saying "No Battery".

[charlieharper]

My parents have been without power since yesterday noon. At around midnight the Inverter just switched off all power, despite SOC being at 48% and the inverter completely dead. This morning, as the sun started rising, the inverted came back on, but it shows, "NO BATTERY". There's 2x 5.2kwh lithium batteries linked up to an 8kwh Deye inverter.



I'm not at my parents, so trying to figure out remotely what's wrong, but haven't seen this before.

Any ideas?

Thanks!

 

[Steamy Tom]

What do the batteries show? i.e on their status lights or screens? They should probably just sit tight until about 9-10am or so, let the system run it should reset itself when enough charge has gone back to the batteries.

If after that there is still an issue then start fiddling.

 

[Mzezman]

When was the last time the batteries got to and sat at 100% for a period of time? Could be an imbalance / Soc drift

 

[BadBoyGP]

My easiest solutions for the deye invertors are switch off for like 5 mins, and then on again

 

[leon.davibe]

the 48% soc means nothing in some circumstances
like when people try and use the 20-80% soc notion trying to extend battery life

some inverters will start up without battery ie from either eskom or solar , but won't charge if battery isn't present

so if it shutdown then likely the battery was flat and went into protection mode
some battery bms's have a high recovery voltage , ie just resting the battery doesn't get it to recover to that voltage by itself

in this case a jump start is needed with either a 40+ voltage battery or power source

or coms is gone and reason why not charging , the shutdown makes me lean to battery in protection mode