Werker SLA batteries? (... better than PowerSonic?)
PowerSonic was a reliable battery before their manufacturing was outsourced. Now all bets are off. Is Yuasa any better?
At work we use a lot of AA and 9V alkaline batteries. The old reliable brands (ie Duracell) cannot be trusted like they used to be. Now we're switching to rechargeable Lithium packs.
I had some ancient 7A/H PowerSonics that just kept going. One had been left with a load for 11 months, which as you imagine metered zero volts. It was charged and found capable of running a modest instrument panel for three to four hours. More recently acquired PowerSonic batteries were disappointing.
The new Tenergy LiFePO4 batteries are also made in questionable places, but are - so far - working far better than any SLA I've used. Had a problem with the controller (panel power-up would trigger protection) on a 14A/H pack but the company refunded it right away. Now using three Tenergy 12V 10A/H. Primary two in parallel and a separate one.
Jim
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