The Gill G-35 Battery is very reasonably priced at SkyGeek.com (especially considering its high level of quality) and works with many Hawker Beechcraft, Cessna, and Piper planes (see the model listing below).
The product you see here comes without the electrolyte fluid, but you can also order the Gill G-35 Battery with Acid right here at SkyGeek.com at an irresistible price.
Beech models: 17, 18, 19, 23, 24, 33, 35, 36, 50, 76
Bell model: 47G-5
Cessna models: 180, 182, 185, 188, 195, 206, 207, 210
Mooney models: M20, M20B, M20D, M20G, M20J, M20K
Piper models: PA-11, PA-12, PA-14, PA-16, PA-18, PA-22, PA-23, PA-24, PA-25, PA-28, PA-30, PA-32, PA-34, PA-39, PA-44
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.