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It was the first snow of the year here today, so I did a test run of my Mr. Heater Big Buddy to make sure it was still functioning. Everything worked out OK except for the fan that's part of the system to help circulate heat.
The fan isn't required for it to work, but it's certainly a nice-to-have. I'd bought some C and D-cell size adapters from Eneloop that use Eneloop AA batteries to run, but the design of the positive terminal prevents them from working in the Mr. Heater. There's such a tiny contact on the positive side I'm not sure they would actually work in anything, but I have nothing else to try them in. I'd tried to standardize on rechargeable AA and AAA batteries so I was hoping for success but I'm glad that I tested it first.
Is the Powerex line the best choice for rechargeable D-cells? Also, are there any solar chargers that will work with these that aren't Harbor Freight specials? I haven't seen any solar chargers for the D-cells that look high-quality. Price is somewhat a factor but I am willing to pay for quality.
Also on the topic of rechargeable batteries, does anyone have any suggestions for rechargeable 123as? I bought a dozen "Watson" brand 3v rechargeable 123As and a couple spare chargers. They are only 400mAh so I wasn't expecting them to run a light or anything, but I put them in my MSR MIOX and they will not even run that when fully charged. The MIOX was the main plan for using them so it's disappointing. Most other rechargeable 123a batteries I can find are 3.7v which is not what the lithiums run at so I think they would cause damage.
Thanks for the great information in this thread so far!
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