Took Diehard battery in to sears and had checked, and it tested bad and actually tripped the breakers on there machine twice. Noting that it was bad . its under a 3 year free replacement but without a customer number or original reciept it cant be warrantied . I tried old phone number that it may have been under with no luck. All i needed was a replacement battery even if allowing them to flag it from that day forward there will be no additional warranty STILL sorry cant help you. Wasted $150