MK M22NF SLDG - Sealed Gel Power Chair Battery (G Terminal) is completely maintenance free and is a superior power source for scooter, power chair, mobility scooter or electric wheelchair. The battery's sealed construction eliminates periodic watering, corrosive acid fumes and spills. The electrolyte will not stratify. Therefore, no equalization charging is required, allowing for a faster recharge. The sealed gel battery increases durability and deep cycle ability for heavy demand applications.Less than 2% per month stand loss means little deterioration during transport and storage. The battery's tank formation ensures voltage matching between cells. The power chair battery transports easily and safely by air, no special containers are needed. The battery's construction ensures reliable service, support and quality.