RS2/IS2 Two 6 Amp Bank 6 Amps 3.0"H x 6.5"W x 7.25"L 5lbs 12V

RS1/IS1 One 6 Amp Bank 6 Amps 3.0"H x 4.5"W x 6.5"L 3lbs 12 V
Lithium version is 412.59$

RS3/IS3 Three 6 Amp Bank 6 Amps 3.0"H x 6.5"W x 10.25"L 7lbs 12 V