Yesterday evening I replaced the two 6-volt storage batteries in a small Trip-lite UPS. The originals swelled up and got damaged after they were drained completely and then were attempted to be recharged (under load) the day power was restored.

Anyway, this morning I plug my trusty Tensor lamp with its 40 watt high intensity incandesent lamp into the device and simulate a power outage (by pulling the plug on the UPS [Linked Image] ). The thing switches to battery mode and after a second of it winking out, the light starts getting juice from the inverter.

The bulb was flickering a bit when it was running off the inverted AC. It doesn't do that on standard AC.

Is this normal? I don't have any experience with UPS devices or inverters (the ones you plug into a car battery to get 110 volts).

Thanks guys.

[This message has been edited by SvenNYC (edited 08-30-2003).]