That charger is far too small fr anything much larger than a lawnmower
battery. I'd recommend a 20-30A Iota charger.

Karl

On Thu, 1 Aug 2013 12:17:36 -0700, neil n <musomuso@GMAIL.COM> wrote:

>Hi all.
>
>My new Noco Genius 7200 (7.2 Amp) charger doesn't seem sufficient to
>run a Truckfridge 49 DC while maintaining a group 27 100 Ah deep cycle
>battery. This may be due, in part, to the "intelligent" aspect of the
>charger (algorithms, etc.) but it's also more likely due to it being
>undersized.
>
>It seems one common mistake people make in building a solar set up, is
>undersizing in terms of Watts needed and actual solar panel output.
>(not to mention future proofing by installing  a controller capable of
>handling future higher Amp loads) This may well be true for battery
>chargers used, in part, to supply 12VDC when connected to shore power.
>
>This has likely all been said before, but I would suggest that in
>particular, though a good product by all other measure, the Noco
>Genius 7200 may not be what you need. In chatting live online with
>Noco support, they suggested I add another battery and install a
>G26000.
>
>In hindsight, I should have installed a TF49 AC/DC or modified the
>cabinetry and installed a TF65 AC/DC, or just bought a less expensive
>but higher output charger. The price difference between DC and AC/DC
>is about what I paid for the Genius charger, but in general, there
>would have been less hassle.
>
>
>Neil.