Jun 28, 2011, 7:13 AM
Post #11 of 19
The propane option on a good Honda generator sounds sweet! A different generator-fuel storage solution: Autozone (Merida) does sell "Stabil", the gasoline preservation chemical additive, but I've found that our small 2 cycle motors' carbs still develop heavy deposits/blockages over time even with Stabil in the gas.
When you talk about connecting to your car battery a a back-up supply, did you consider that you likely need to have the car running to avoid damaging the battery, (unless you have a deep-cycle battery in your car)? Car battery electrodes are designed to supply a lot of amps quickly for starting, but they do not tolerate deep discharges well. Car battery lead plates get sulfonated (poisoned with sulfate) during repeated deep discharges vs. deep cycle batteries designed for deep discharges.
Another multi-use alternative to your problem is to buy a big-capacity portable Jump Starter for starting cars. Costco used to sell them for about $1,000 pesos. It uses an 18 A-hr deep-cycle lead-acid battery => 216 W-hr = enough power to run a laptop computer for 3-5 hours, and will run a little net-book for 6-10 hrs. The Jump Starter includes it's own small 15W charger, which can be used to trickle charge car batteries.... You'd still need an inverter to convert the Jump Starter 12VDC to 110VAC
The Power Station PSX model Jump Starter also includes a small built in air compressor and decent volt meter, so, you can get at least 6 different uses/functions out of a single Jump Starter (12V charger, big back-up battery, portable auto jump-starting, air compressor, Volt Meter, and power source for some cordless drills**).
What brand of UPS died?
I had a cheap ($40 USD) APC that does not down-regulate consistently high voltage. Our block's transformer puts out 134V on one leg and 137V on the other leg. The 137V was enough to ruin our older HP laser printer, and the display on a microwave oven. APC ultimately re-imbursed us $400 for the printer, but it took 3 months of fighting with them.
Did you save the batteries from inside the dead UPS?
If the batteries were OK, after they are charged, you can wire them in parallel into your existing UPS, and increase (2X?) the capacity of your UPS.
**I've also used the extra UPS batteries for the last 2 years to power my 24V portable drill. I connected two UPS batteries in series with 16 ga lamp cord to the connector plate of a dead drill battery, so, my "cordless" is now much lighter, since I carry the UPS/drill batteries in a small bucket, and has really long usage-life. I also use the UPS to re-charge the drill-batteries after each use (by tapping off the UPS's 12V charging system). Since UPS's use 12V chargers, you have to use a little trick w/DPDT switch to charge each battery in your 24V (2x12V ad hoc) drill power system.
Havin' fun yet?
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(This post was edited by YucaLandia on Jun 28, 2011, 10:37 AM)