On the negative side, this charger is only 900 mA (0.9 amp). My impulse buying didn’t allow my brain to totally absorb this, so I may have a charger that is too small for the job. My two bulb ceiling light uses about 2.9 amps, so two hours of lighting with both bulbs will require a little over 6 hours of charging to bring the battery level back up to full. I don’t remember how many amps the Fantastic fan uses on low, but I don’t think it’s more than 3 amps. If I don’t run the fan a lot, this charger will keep the battery charged and maintained over a 24 hour period. But, I will probably have at least 12 hours of each day with no fan or lights on for battery replinishment.
If I find that I use more power than the charger can output, then I’ll have to get a charger with more amp output. I looked at a 5 amp charger of this type for $78 plus shipping. If it proves to be inadequate for camping use, I can always use this YUASA charger on my boat batteries, so the money spent won’t be for naught.
The specs on this charger state that it reaches 14.4 volts then switches automatically to storage mode. It has wall receptacle plugs on the back of the unit, so I’ll install a short cord with a socket at my main breaker box and run the DC output cable over to my battery box via metal or PVC conduit.
