Price: $34.99 (battery only),  $46.99 (battery charger)

The  Bioenno Power Lithium Iron Phosphate (LiFePO4) Battery, Model BLF-0903W  is a specialty 9V/3Ah battery designed specifically for low voltage applications such as sensors and emergency lighting. This battery can be used for a variety of applications including powering small electronics. The battery includes a PCM (protection circuit module) and has an available 110VAC charger.  Please note that this battery should be charged using a LiFePO4 compatible charger, and not with a charger for SLA batteries.

BLF-0903W Battery Specifications
Voltage: 9V
Capacity: 3 Ah
Case Type: PVC Pack
Charge Connector: DC Barrel Plug
Discharge Connector:  Anderson Powerpole
Maximum Continuous Discharge Current: 3A
Maxiumum Peak Discharge Current: 6A (5 sec)
Max Power Delivered to Load @ 9V:  27Watts (9V x 3A = 27 Watts)
Dimensions:(L x W x H) 2.7 in. x 2.2 in. x 1.4 in. (67 mm x 54 mm x 35 mm)
Weight: 0.6 lbs. (0.3 kg.)
Includes PCM (protection circuit module) that provides balancing, protection overcurrent, overdischarge, and overvoltage
Available 110VAC Charger

Compatible AC-to-DC Charger Specifications
Input Voltage: 110 VAC
Output Voltage: 10.8VDC
Current: 0.7A

Additional 

Warranty: See Separate Warranty Page