Product Overview: The Stewart Golf lithium battery is supplied with blue/black connectors, but your trolley may be fitted with red/black connectors depending on how old it is. This change has been made to emphasize the importance of using the correct battery charger with this battery - using the wrong charger could damage the battery. If your lithium battery has red/black connectors, this lithium charger is still compatible for use with your battery. Features: Type: LiFePO4 ( Lithium Phosphate) Voltage: 12 Volts nominal Capacity: 20 Amp hour Size: 188mm x 160mm x 75mm  (7.4” x 6.3” x 2.9”) Weight: 2.9Kg  (5.7lb) Life: More than 1,000 cycles (see below) Warranty: 2 years Management: Internal integrated cell management system Connection: Output Torberry, separate charger socket