The Mamiya #906-320 Aptus Lithium-Ion Battery for Digital Backs is a replacement battery for all Aptus Digital Backs. It replaces or serves as a spare for the one originally supplied with your digital back. This 7.4-volt system offers 2350 milliampere-hours of power.
For all Aptus Digital Backs
Requires Mamiya's #906-325 charger (maximum charge time is 3 hours)
Mamiya Aptus Lithium-Ion Battery for Digital Backs