crwdns2936637:0crwdne2936637:0 crwdns2853008:0crwdne2853008:0 crwdns2918746:0crwdne2918746:0

crwdns2944351:0crwdnd2944351:0Braun Trimmer Battery Replacement and Modificationcrwdnd2944351:0crwdne2944351:0

crwdns2933797:0elwiwiancrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 elwiwian

crwdns2933769:0crwdne2933769:0
crwdns2933771:0crwdne2933771:0
crwdns2933801:0crwdne2933801:0
Conclusion
My old batteries barely lasted one minute of shaving, and never held any charge. I didn't test the full working time of the new batteries, but they allowed me to use the trimmer at least for 10 minutes.
Thanks to adding the battery holder next battery replacement would be way easier and faster.