Mighty Max ML35-12GEL 12V 35AH Gel Battery — NB Replacement Compatible with Tempest TR40

ML35-12GEL is a Mighty Max 12V 35AH GEL rechargeable, maintenance-free battery designed as an NB replacement compatible with the Tempest TR40. Its gel electrolyte formulation reduces self-discharge compared to AGM batteries, so the unit holds charge longer when left unused — making it a strong upgrade option. Built to perform across a wide temperature range, this gel battery delivers reliable power in both hot and cold conditions and resists the effects of temperature swings. The construction uses a thick, non-spillable gel paste that minimizes leaks and fumes, lowering the chance of acid spills; the rugged design also helps the battery withstand vibration and shock in demanding environments. Backed by Mighty Max’s reputation for quality, this model offers improved discharge behavior, enhanced safety, dependable performance, and a longer service life.