Proto #1 Solitons and the mobile station are powered by coin cell Lithium Ion batteries. It is very important to insert the battery with the right polarity.
Failure to insert the battery correctly is a fire hazard since it will certainly lead to overheating of the battery which will also cause irreversible damage to a Soliton.
Such damage is not covered by warranty, you would need to purchase a replacement Soliton ('Solo') - see Store.
Proto #2 Solitons do not use this type of battery.