SP5 new battery - no start without powersupply

[pingofdeath22]

Hello, I have installed a new battery in my SP5. It now no longer starts without power supply. But if it starts successfully, you can remove the power supply and it runs on battery mode. But it does not detect the battery charge status and shows 100% all the time. What could be the reason for this?

 

[GreyFox7]

I'd guess maybe something isn't making contact or is contacting something it shouldn't, maybe not aligned properly in assembly. Perhaps check in with the battery supplier/manufacturer ... I'd think they have been around the block once or twice on this before.