# Help.. Gem BDI problem?

**URL:** <https://community.electricforum.com/t/help-gem-bdi-problem/4917>\
**Category:** GEM Forum\
**Created:** [April 23, 2015, 12:56pm UTC](https://community.electricforum.com/t/help-gem-bdi-problem/4917 "2015-04-23T12:56:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sdjr1904](https://avatars.discourse-cdn.com/v4/letter/s/c77e96/32.png) [@sdjr1904](https://community.electricforum.com/u/sdjr1904)\
**Post date:** [April 23, 2015, 12:56pm UTC](https://community.electricforum.com/t/help-gem-bdi-problem/4917/1 "2015-04-23T12:56:34Z")

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Hello,  
I am a newbie here, looking for some help from a few Guru’s.  
I have an early Gem (1996 and 48V)  
Anyhow, I changed batteries, due to them being in need of.  
I get the new ones installed and when i flip the the key, the BDI is flashing red and yellow. I check the voltage to controller showing 48v. I then check voltage to BDI showing 48v… So ireplace the BDI thinking its toast.  
I install the new one and it instantly shows full charge all bars green.  
I pat myself on the back and say to myself im a genius…LOL

I put on charger overnight becuase i ended up using it half the day. The next morning i walk into my garage and the charger shows full charge. I flip the key and the new BDI is now flashing the same way the old one was ???  
Please help !! 😕