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A good quality series 27 deep cycle battery has 105 ah (at the 20 min rate) and will probably have at least a 3 year warranty. (if you take care of it and never discharge past 50% or leave it sitting should last 5 years min.) Costco (Sam's club too I hear) price under $100. Tried. tested. true. The batt gadget has a crappy-ass chinese sealed lead acid anchor in it. The only thing going for that batt-of-all-trades is possibly the batt charger(IF it's any good and 6 amps ain't much) but it's truly a whole lot of cheap wrapped in a whole lot of plastic. Consumer crap in my opinion. At 19 amp hours not 450 (that' cranking amps.) you may just get to the end of your street before you hit 50% SOC. A typical starting battery has 650 CCA and a 70 min reserve at 25 amps. That's 25 X the multi thing.
Sorry if I busted anyone's bubble
"Buy the best and only cry once"
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Vortex generators are old tech. My new and improved vortex alternators are unstoppable.
"It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.
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