Originally Posted by Teelee
I've seen on the internet a backup solution that you plug your sump pump into. This unit then gets plugged into the electrical outlet. As long as there is electricity, the battery is just being charged. In the event of a power outage, the battery then takes over and runs the sump pump. Once electric power returns, the battery shuts down and starts recharging until it is needed again. I'm not sure how well these work. There's not a lot of information on them. Does anyone have any knowledge of these units?
I installed one at my previous house and this past weekend installed one in my new house.
At my previous house, I installed it right after Isabelle rolled through. Power was out for days, and during the beginning of the storm, I was in the basement scooping water out of the pit. We were so lucky that Isabelle produced more wind than rain.
After installing it, the backup pump never kicked on up until I sold the house, but it was great for peace of mind. A generator is great, but unless it's a whole house backup generator with an automatic transfer switch, it won't help you if no one is at home, out of town, or on vacation. Also, it won't help you if your primary pump craps out.
I bought the medium duty Basement Watchdog System for both homes. For my first purchase, HD used to sell it at their stores. Now, you can only buy the medium duty one online at HD's website. HD only sells their light duty emergency pump.
Also, in order to take advantage of their battery monitoring system, you must buy their battery. It won't work for a general 12V marine battery.
Buying their battery means buying an empty battery and buying the sulfuric acid to fill yourself. HD sells the acid at their stores.
The medium duty system is equivalent to slightly less than a 1/3 HP sump pump. In ideal conditions, it should never kick on. Trickle charger pulls about 2 amps.
They've redesigned the float switch to have a primary and backup float, which I don't think works that well.
All in all, if you want to buy one, then buy it now from HD online. I think online, you can buy all 3 models. HD has free shipping for any purchases over $49.