Battery Specification: 14.8V 7800mAh
Pack style: 4S3P with 18650 2600mAh SANYO cell
Specified charger: 16.8V  2A/1A

Compatible With:

Resmed S9 Escape
ResMed S9 Autoset
Resmed S9 Escape Auto
ResMed S9 Elite
Resmed S8 Escape
ResMed S8 Autoset Vantage
Resmed S8 Escape II
ResMed S8 Elite II
ResMed S8 Autoset II
ResMed VPAP Auto
ResMed S8 Elite

Not Compatible:
Resmed S8 Compact
ResMed VPAP Auto 25
ResMed VPAP ST
ResMed VPAP Malibu

Compatible:
Respironics Duet LX
Respironics Harmony S/T
Respironics Remstar
Respironics Remstar Auto
Respironics Remstar Auto w/Cflex
Respironics Remstar w/Cflex
Respironics Remstar w/Cflex 2
Respironics Remstar Choice
Respironics Remstar Lite
Respironics Remstar M Series Mpap
Respironics Remstar Plus
Respironics Remstar Plus w/Cflex
Respironics Remstar Pro
Respironics Remstar Pro 2
Respironics Remstar Pro w/Cflex
Respironics Remstar M Series
Respironics Remstar Plus M Series w/Cflex
Respironics Remstar Auto M Series
Respironics Sleep Easy
Respironics Synchrony
Respironics Virtuoso
PR System One Remstar Plus
PR System One Remstar Pro
PR System One Remstar Auto
PR System One BiPap

Not Compatible:
Remstar Bipap Auto SV
Remstar Bipap Auto S cn1000297981
Remstar Bipap Auto Pro
Remstar Bipap Auto Pro 2 with Bi-flex
Remstar Bipap Auto with Bi-flex
Remstar Bipap AVAPS