The Delta APRU Battery - BB2590 rechargeable lithium-ion battery is compatible with the Autonomous Portable Refrigeration Unit (APRU) and is sold separately.
Designed and manufactured in the USA.
Nominal voltage: 14.4 V / 28.8 V
Capacity (Ah): in 24V mode: 7.5 Ah / in 12V mode: 15 Ah
Maximum voltage: 16.8 V
Operating temperature: −20°C to +60°C
Storage temperature: −40°C to +40°C
Connector: floating type according to U.S. Army DWG # SC-C-179495
State of charge indicator: yes
US government specification: MIL-PRF-32052/1
Battery type: rechargeable
Smart Battery: SMBus
Dimensions: H 12.7 × W 6.1 × L 11.2 cm
Weight: 1.41 kg