EverStart 27DC Marine Battery
Power Supplies · Superseded 2026-05 by the [[LiTime 12V 100Ah RV Lithium Battery (2nd u

Flooded lead-acid marine deep-cycle battery, bought as the cheap practical option for powering the TE Systems Amplifier portable. It did not hold up: at the amp’s 48–55 A draw the voltage sagged enough to cost output power, and ~50% depth-of-discharge left only about 55 Ah usable out of a nominal 109 Ah — in a 50 lb package.
Used In
- before 2026-05 — Portable power for the 6 m amplifier during Field Day, POTA and rover
- 2026-05-27 — Documented and superseded in Matthew’s own comparison article