An extra battery is never excessive, especially if you are taking off for a long and remote trip. This high capacity Iridium 9555 Li-Ion rechargeable battery can be very handy in extreme situations.
FEATURES:
Compatible: Iridium 9555 Phone
Battery Charge Time to 90% capacity is 3 hours when charged in a 9555 handset at 25 C (77 F)
For optimum performance only charge your battery between 0 C (32 F) and 40 C (104 F)
Fast charge will be complete in about 3 hours 15 minutes