The battery is a type NP battery with AGM and VRLA technology. It is not modified and is not a custom bundle. (12V 12Ah). AGM are 'Absorbed Glass Mat' The Plates are wrapped in the Mat and electrolyte is absorbed into it - protecting the plates.
12v 12Ah LiFePO4 LI12-12 Ultramax Lithium Iron Phosphate Battery and Charger
Yuasa REC14-12 Mobility / Golf Battery 12V 14Ah - Uprated 12V 12Ah YPC14-12
TWIN PACK MOBILITY SCOOTER BATTERIES 12v 12AH 22AH 33AH 36 40 50AH 55 75 100AH
MOBILITY SCOOTER BATTERIES 2 x AGM/GEL 12v 12AH 22AH 33 36 40 50AH 55 75 100AH.
SLK POWER MOBILITY SCOOTER BATTERIES 2 x 12v 12AH 22 33 36 40 50 55AH 75 100AH
PAIR 12v 12AH 15AH 33 36 40 50 55 75 100AH MOBILITY SCOOTER WHEELCHAIR BATTERIES