I have this 12V 7Amps DC Dry Cell Battery please see image below
I looked up your pump. It pulls about 80 watts. Now it is possible to convert 12V DC to 220V AC - that device is called an inverter. I've linked one below. Assuming about 80% efficiency in the inverter (which is optimistic) you will be pulling about 100 watts from your battery. 12V x 7 amp-hours is only 84 watt-hours. And you only get that with much lower discharge rates, say about 10 watts instead of 100. I doubt your battery would run this pump for more than half an hour. I wouldn't be surprised if it lasted only 15 minutes. I'm not just guessing here. I have extensive experience with this type of battery as used in UPSs (Uninterruptible Power Supplies). Also, I've linked a typical data sheet below. You can find pumps that run directly off of 12 volts DC. But they're still going to pull about the same power (watts) to do the same work. You will avoid the conversion losses in the inverter, but that is all. And you might lose that again in the pump, since things running on higher voltage are generally more efficient (reason: for the same power, greater current causes greater I-squared-R losses). Sorry but... I don't know what your reason is for wanting to run from a battery, but a half hour or less runtime is just not practical. You can find larger batteries of course (the largest barely-manageable would be a typical car battery) but you are still going to have quite limited runtimes. As someone else said, you'll really need two batteries (at least), one on charge and one running the pump, and you'll need to buy a charger. And the batteries will need to be replaced often, as typical lead-acids don't last long in rapid deep cycle usage. Verb. Sap. to one of the other answerers: A rechargeable battery is a *secondary* battery, not primary. .
That is not dry cell in the purest meaning of the term. A dry cell is a carbon/zinc type cell. That is a lead acid primary cell. It just has its acid in a gel form rather than a liquid lead acid cells would have. That said, you need an inverter to power your AC motor, and likely a sine wave one. With the 7Ah battery, you might not get as much run time as you like. Being a lead acid cell, you also need a charger for that sort of battery. You never said anything of that pump's current/power consumption, to it cannot be said how long it will run. The latter of your pump images is a DC pump,, which likely will run directly from your battery for a few hours. You at least need a fuse for it, and ideally a control circuit which cuts it if when the battery reaches its safe discharge point. If you want longer operating time, get batteries with a larger Ah rating, and charger for that capacity battery.
Battery power would not last long enough.You would need 2, one on charge. Cheaper using mains power.
