Medical Research Labs 521A replacement battery

Medical Research Labs 521A battery provided is a 6V 1Ah rechargeable SLA type with AGM technology. Each battery has a dimension of 1.65 x 2.01 x 2.04 inches. Medical Research Labs 521A supplied by Sigma Batteries is manufactured by Sigma Power Systems with the part number SG0613T1.Medical Research Labs 521A has T1 terminals with a dimension of 0.187 inches.