Nokia. A company everyone knows and most of us probably even used one of their phones in past. They were better or worse but one thing was good - most of them shared batteries…
My daughter (8.5y old) uses Nokia E50 as her daily phone. Sim card is covered by duct tape to not fall out when phone hit a floor (previous one went missing in such situation). Mira records how she and her friends sing, does some photo sessions to her dolls etc.
But during weekend phone stopped charging. Hm… Is it charger? Nope, it was original Nokia one. Tried some crappy Chinese one with same result. So let’s check the battery.
Opened drawer, took Nokia 101. Inside was BL-5CB battery. Inserted into E50 got phone back online. But I like my 101 and keep it as a spare just in case.
Digged in a drawer with old devices. The one where I keep Sharp Zaurus c760, Sony Ericsson k750i, Openmoko FIC-GTA01bv3 and few other pieces of junk with some sentimental value. What I found there was Nokia 6230i which I got from Ross Burton during GUADEC 2007. Last time I used it about 5 years ago. But it had original Nokia BL-5C inside!
So I put that battery inside of E50, plugged charger and guess what… It started charging and phone booted! With over 11 years old battery!
During next few days I will buy BL-5C clone somewhere (they are 3-8€ now) and put it in my daughter’s phone.