A Gill G-25 battery (12 volts) will fit Aerostar, Hawker Beechcraft, Cessna, and Piper planes. Take a look at the cursory "top level" Gill Application guide below to make sure it's a fit. The G-25 Battery comes without acid as well
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Battery Warranty (Applicable to Gill)
The manufacturer will replace with a new battery without charge (except for transportation) any battery which fails in service within 90 days. Addition of any chemical other than water or battery grade sulfuric acid voids this warranty. After expiration of Service Guarantee, adjustment will be made on pro-rata basis based on unused months of service. Batteries that are broken, discharged or fail due to freezing or abuse are not covered.
Aerostar models: 600, 601, 601P Beech models: 19, 23, 24, 55, 58, 77
Cessna models: 120, 140, 150, 170, 172, 175, 177, 310, 320, 340
Piper models: PA-11, PA-36, PA-38