I think the NOCO chargers are switcher based rather than large transformer and large capacitor. The are much lighter in weight than some brands.
I have two of the automotive line installed on Windburn in a dry location. NOCO also makes IP68 marine chargers. They work fine and do seem to charge up the batteries quickly despite the lower amp rating ( 7.2 ). A friend tried out a larger one, think it was 15 amp, to see if it would solve a situation where his previous charger seemed to cycle on and off when the fridge ( 12 V only ) ran. He said when in voltage float mode the NOCO kept the voltage stable as noted by a fan not speeding up and down. The larger units have a "Jump Charge" button that will start charging an almost flat battery. I think it acts as a constant current source for a few minutes, enough to get some charge back into the battery. Michael Brown Windburn C&C 30-1 From: Josh Muckley <muckl...@gmail.com> To: C&C List <cnc-list@cnc-list.com> Sent: 10/31/2019 1:27 PM Subject: Re: Stus-List Starting An Engine with Battery Charger Connected? As far as I know all the modern chargers have charge capacitors that will create a pretty good draw when first turned on until the caps are charged. A well designed unit should not be connecting to the battery until the caps are charged and the output voltage is stable. I would try starting the charger and taking voltage readings at the battery. Then try starting the charger with the battery disconnected. You might also try with the battery connected and already full charged (use a portable automotive charger to get them full first). It could be a old 20amp breaker that is popping early. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
