

| Subject: | Battery Charger Sizing (Amperage) Woe and Warning (?) |
| From: | neil n |
| Date: | Thu, 1 Aug 2013 12:17:36 -0700 |
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. -- Neil n Blog: tubaneil.blogspot.ca '88 Westy http://tinyurl.com/c8rlw6p '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ Vanagon VAG Gas inline-VR Engine Swap Group: http://tinyurl.com/d7gd5ej
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