The listing, MOTOROLA Battery SNN5582B 3.6V Li-ion has ended.
Motorola Lithium Ion Battery SNN5582B
Fits these compatible Motorola cellular phones:
ROKR E1, e310, c333c, c341, c343, c343A, t720, t720c, t720i, t721, t722, t722i, t725e, t730, t730c, t731, t731c, v810.
This original Motorola SNN5582B Li-Ion cellular battery This Li-Ion, no-memory, OEM (Original) Motorola battery is rated at 750 mAh. At full charge, this cellular phone battery increases the standby and talk time available before recharging. Capacity: 750 mAh Li-Ion, 3.6V; Provides 150-225 minutes of talk time; Provides 125-350 hours of standby time.
Used, I found it, should be good My gain is your gain.
This thing cost $18.00 best price i can find.
It is important to condition (fully discharge and then fully charge) your battery every two to three weeks.