This #RES3511-INV Bundle includes the 35AHBattery. TRAVEL Battery System. Battery is "Maintenance Free”, Deep Cycle, Sealed Lead Acid (SLA) and does not require checking fluid level. When comparing with other batteries rated in Watt Hours (WH) this battery would rate at 420 WH @ 12V and it would rate at 111000 mAH (3.7V).
eBay