Is it possible to connect a 1A device to a 7A battery?

Question

Uninterruptable power source

The essence of the question is whether it is possible to connect a device that consumes 12V / 1A to a 12V / 7A battery directly, for clarity, I want to power the router and ADSL modem at home. that is, to make a kind of uninterruptible power supply, if so, then the question arises whether it is possible to drill a hole in a regular UPS and connect everything there directly to the battery. i.e. the UPS will charge while powered on while powering the devices. And when there is a power outage, they will work from the battery.

Answer 1

Is UPS running out of free outlets?

Answer 2

answer: yes, you can connect when the UPS is disconnected from the network, but ....
put a tee)) Although you will lose energy in the PSU from the modem, however, everything will be Feng Shui)
If you do as you want, then:
- charging voltage 12v battery is about 13.5v, which is higher than necessary for the modem, although it may not burn out)
- if the modem runs on battery until the last second, then you will have a one-time battery - it will go into recharging.

Answer 3

Your battery says 12V / 7Ah or 12V / 7Ah and this means the capacity of the battery - i.e. when loaded by your device 12V / 1A. theoretically, the charge should be enough for 7 hours of battery life of the device. The voltage during this (discharge) may sag and if the device works past the battery discharge controller (installed in the UPS), a deep discharge may occur, which will lead to a reduction in battery life or its final unusability. 12V / 1A is the maximum load current, in fact it can be less.