I looked far and wide looking for this type of battery Dalton Medical BAT-22NF 12V 55Ah Wheelchair Battery, we purchased 2 and its NOT recommended to just replace the bad battery. Keeping one old battery and adding one new battery to the system will shorten the life of the new battery.
Let me just say its NOT just about the batteries its also about the service of the company. Batteries came fully charged and ready for use came in cardboard boxes with plastic bags surrounding the batteries. Necessary bolts and nuts came with the batteries and like the description says you MUST provide your own cables. Batteries are of great quality, batteries shipped quickly and arrived way sooner than expected. There was NOT a charge for shipping woo-hoo. Most other company's wanted more for this type of battery and expected you to also pay for the shipping. Thank you BatteryClerk for being there. I Highly recommend BatteryClerk to everyone.