change battery by myself but not ....

[Cliff.Lee]

I disassembled the alta hr myself two weeks ago, because in one day of use, the power was exhausted within four hours after being fully charged.

I searched the Internet for maintenance and sharing videos, bought a new battery with a domestic battery manufacturer, and started to change it myself.

When I change the battery, I can fully charge the battery to 100%, but the battery status cannot be restored to the previous seven days of use.

The restart and repeated charging and discharging I tried can only take up to six hours, which does not seem to be the state of the new battery.

Original battery model : 310919 40mAH

Replaced battery model : 301020 50mAH

The volume is a little bigger, but it can be put in the original position. I am still experimenting with the battery problem.......

[Odyssey13]

Hi @Cliff.Lee  so you replaced the battery and only get six hours of use before needing to recharge?

[Cliff.Lee]

It takes 3 hours to fully charge a new battery, and it only takes 6 hours to go from 100% usage to 5%.

I ran the test again in the morning, and after using it for an hour after being fully charged, the battery power dropped by 20%.

[Odyssey13]

Not sure it was worth all the work you did to change the battery, but a good experience, I'm sure.