Have found a 10W unit w regulator on alliexpress for $50. Apparently sulphate buildup on the anodes can be an issue if used excessively but if I can improve battery life, it's a win.
Have found a 10W unit w regulator on alliexpress for $50. Apparently sulphate buildup on the anodes can be an issue if used excessively but if I can improve battery life, it's a win.
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