GPS Base Battery
I have a 12 volt jump starter with a light on top I use for reading. That light will run for days. It's a lead acid battery.
A few years ago I rented an RTK system and I accidentally left the transmitter radio battery at home. So I used that jump starter battery and it lasted all day, no problem.
Andy:
i was hot for Optima batteries also; then after 2 failed, they just weren't worth the cost.
When we bought the old Topcon AP-L1A robot, we were issued with it in the sale some generic Batteries Plus (the national franchise store) sealed gel cell 12v deep cylce battery. i figured it was some junk that would be shot in a few months. That was April 2000 and the somebitch still functions flawlessly! That's 10 years of heavy all weather use. And yes i agree, gotta be some kind of anomaly - 1 out of 500 battery miracle, come over and see it if you want.
Couple years ago replaced NAPA marine wet cells with Batteris Plus best sealed gel cell deep cycles - i think they're "WERKS" batteries and they have proven good so far also. Damn wet cells...still can't believe that they even came in our ATVs. Whoever spec'd that needs their asshole removed. A device like that that takes all that shaking and vibration off road and you put a bottle of liquid in it for complete reliance for electricity!
Unless it's a very quick setup, i only use that type battery for the TS, robot, RTK radio, and receivers. It's the best, most consistent power source, and in the winter, there's always juice.
i sincerely want to report something more positive about Optima; but, that's the truth of it. They consistently fail in my application. i gotta be doing something wrong...
