DeLorme Earthmate PN-40 User Manual page 101

Batteries
The Earthmate PN-40 can be powered by two AA batteries (NiMH,
®
alkaline, or lithium), or a DeLorme-supplied Li-Ion rechargeable battery.
You'll find Earthmate PN-Series accessories at www.delorme.com.
Rechargeable Lithium-Ion Battery Pack Caution
Use only an Earthmate PN-40 Battery Type. Risk of explosion
if battery is replaced by an incorrect type. Dispose of used batteries
according to the instructions.