Gell Batteries

[Thomas G.]

Originally Posted by David Tilston

.......The UPS also happens to have an external battery plug for 24VDC. ........

What do you plug into 24 volts?

[David Tilston]

There is an external DC disconnect connection that is identical to the internal battery disconnect. When we moved, they were throwing out the UPS, and a couple of previously replaced garbage batteries. I took the disconnect connections and the attached fuses off the garbage batteries. I will just connect two of the gel cells in series, with a fuse between them and install the disconnect on a #10 umbilical to the UPS.

[Ed Harris]

Many UPS units have an external connection so you can connect a larger battery bank tha will fit inside the unit itself.

The charging circuits will usually slow charge a much bigger bank than will fit in the case and it allows for growing into a bigger unit without having to replace the "Brain" by just enhancing the storage.

[Brian B-P]

Originally Posted by Ed Harris

In general a Gel Cell has advantages in an environment where they will need to be mounted sideways or upside down as the Gelled Electrolyte will not run out as it will with traditional flooded electrolyte batteries.

Yes, and the same applies to AGM batteries. As I mentioned before, I would expect AGM in all of these applications (that don't use flooded batteries) now, although gel was common in the past. I wonder if AGM batteries are available on the same basis?

[Briantb]

Have you actually tried the microwave.. The 700W refers to cooking watts not how much to start and run the microwave.. I'd be surprised if the 1000 watt inventor can handle it.. If at all not for long... Careful sizing your wires from the battery to invertor

[David Tilston]

Originally Posted by Briantb

Have you actually tried the microwave.. The 700W refers to cooking watts not how much to start and run the microwave.. I'd be surprised if the 1000 watt inventor can handle it.. If at all not for long... Careful sizing your wires from the battery to invertor

Yup. The 700W microwave starts and runs just fine on the 1000 W inverter while connected to the 65 Ahr battery. It takes longer to heat water then I am used to, but it is only a 700 W microwave. $75 is really not much for a 12 VDC microwave.
The inverter complains when the voltage gets low. The 65 Ahr gel battery did not set off this alarm after running for two minuets.