This is not too big a requirement if it is a universal charge, it is recommended to use standing plug. However, if there is a specific charger to charge the battery, it is fine...
When the battery is charged, is the battery placed flat? Or should we stick it in the wall?
This is not too big a requirement if it is a universal charge, it is recommended to use standing plug. However, if there is a specific charger to charge the battery, it is fine
