How long can I expect the backup pump to operate with different battery types? Assuming the pump is running full time.
1947274
The 75 amp hour battery will run 6-8 hours continuously and can last up to 3 days depending on the cycles. The 40 amp hour battery can last 3-5 hours continuously and up to 2 days depending on cycles.
337225
Depends if you pump exclusively or if you just use it for supplementing your milk supply. If used exclusively, we get about 3-4 days on a set of batteries. If used for supplementing, you'll probably get weeks or months from each set depending on how little you use it.For us, rechargeables made the most sense.
215232
You probably should contact PumpAlarm.com as they have excellent customer service. That being said, I will give you my opinion. I would assume that even if the back-up batteries die, which they will over about 2 days (I know this), that when the power does come back on, the unit will re-activate and tell you that the power has come on at a specific time. What you lose if the back-up batteries die, is getting a message about the water level, or whatever it is you are trying to monitor, if there is a problem during the power outage. I believe that when the power comes back on, and IF there was an issue with water where it should not be (or whatever) you would then get a message about that issue. You probably should contact PumpAlarm.com as they have excellent customer service. That being said, I will give you my opinion. I would assume that even if the back-up batteries die, which they will over about 2 days (I know this), that when the power does come back on, the unit will re-activate and tell you that the power has come on at a specific time. What you lose if the back-up batteries die, is getting a message about the water level, or whatever it is you are trying to monitor, if there is a problem during the power outage. I believe that when the power comes back on, and IF there... » Read More You probably should contact PumpAlarm.com as they have excellent customer service. That being said, I will give you my opinion. I would assume that even if the back-up batteries die, which they will over about 2 days (I know this), that when the power does come back on, the unit will re-activate and tell you that the power has come on at a specific time. What you lose if the back-up batteries die, is getting a message about the water level, or whatever it is you are trying to monitor, if there is a problem during the power outage. I believe that when the power comes back on, and IF there was an issue with water where it should not be (or whatever) you would then get a message about that issue. « Show Less
1235307
Rommel, I agree with Tim. It depends on what you are going to use the stored power for. For example, on average you will charge the batteries 10A for six hours or 60aH. If you are running a water pump that pulls 5A for 15min every hour you would need approximately 30Ah to run 24/7. In this case one battery is more than sufficient. In my case I run LED worklights and cameras. I pull about 10A for 8 to 10 hours which adds up to approximately 100Ah per day. Taking battery degradation and the fact not every day is 100% sun, we use two batteries. Hope this helps with your scenario.
1757213
don't really know. I have an average size battery, fish for 2-3 hours, have never run down the battery.
1174724
Full time. So don't expect it to run on a couple of small batteries. You'll need a small power supply.
1876308
It would depend on the condition of the battery. I'm guessing that if the battery is in good condition, with a full charge, it would take a couple days to discharge. I wouldnt take a chance for more than a few hours if I needed that battery. I bought the AC/DC adapter and just run an extension cord to the cooler so as not to drain the vehicle battery (if available). That little fan in the cooler doesn't draw much but it could run your battery down, just like a radio or parking lights left on.
337224
I would get rechargeable BECAUSE I pumped three times (20-30 min each time) and when I docked the batteries they were red. Now, they weren't dead, just almost. I couldn't imagine buying that many batteries just to pump. Rechargeable are the way to go price wise!
1490639
I does run on the batteries, but they are mainly for backup. I don't know how long it would run so take extra batteries.
193175
B. Conner:Thanks for letting me know. Like I said, I'm sure it will work (how much power dies it take to run a small pump?) And if I use rechargeables, I don't have to worry about leaking alkalines.Again, thanks for the info.
900572
well that depends on how long you use it.we have back up batterys from our other black and decker items, but i am very pleased on how long the battery does last... great item..
450878
At least 20 minutes. It seems Greenworks has figured out the battery thing. I had a Roybi 18V and its run time was 10 - 15 minutes. This runs much stronger and longer.
1376366
If your pump runs off a 12 volt battery or 6 volt { standard automotive battery} it will work just fine
256542
You can run a pump, or anything else with this battery. The time it will run is dependent on the current the pump draws. This battery would run a pump that draws 2.5 amps for up to 2 hours.Check the current draw of your pump. It would easily run a pump drawing 5 amps for 1/2 to 1 hr.
2067109
Your current usage will determine how long the battery will last.If your running it to full capacity,then it mightn't last too long.
1186877
The battery has run 3 hours with no problem. Probably will go longer with a full charge. I stopped before the battery did. This is an excellent tool.
2274232
No, you may want to contact an electrician about installing a backup battery for your sump pump.