I read all the negative reviews about this charger but still decided to give it a try. The Revain price was the best price found for this model. The PL2320 20 Amp 6/12V Battery Charger/Maintainer includes the power supply function I need when working on cars in the shop. It has worked well so far, even bringing back a partially sulfated battery. to life if my mind changes I will do so and update. Updated November 3, 2020: PL2320 still works great in store since purchased in July 2019. The store bought two more of the same model and they work great as well. This charger comes highly recommended
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