Chargers and battery banks for the Librem 5

[Quarnero]

@frank

I would have been really stuck without that spare battery.

As related advice already available, just remove your Librem 5 back cover again and:

@dos

charging extra batteries can be easily done via the phone itself. If you use a powerful enough power supply with high enough input current limit, you should be able to take the battery off while keeping the phone fully operational, powered from USB. Then you can just put the other battery in and it should simply start to charge.

@frank

Would it be possible to adapt a battery charger to charge a Librem 5 battery, (a battery that is not installed in the phone)?

You can make this or similar charging set (just make sure that termination voltage stays at 4.2V): Battery for Librem 5 - #53 by Quarnero. Also, ISDT UC2, or more expensive ISDT UC4, might be implemented as chargers as well, but I do not have them. Anyway, by using pogo pin connectors (therefore called “battery holder” for + and − poles), as shown within my here linked post is where you’ll need to start to build some reliable external battery charger by yourself.