Little size packs a great punch when using with the Ecto Topr. We ran our Toprs off and on over 4 days and never had to charge our batteries. Still had some juice left after. And they fit in the battery compartment of the Topr perfectly. A good purchase in my book.
It gets over 100* in my truck this time of year and it is unbearable. Along with the outside temps there is also the radiant heat from the roof and the floors. We had a 3hr drive ahead of us. I also purchased the battery packs not knowing if mine would fit. We got it setup on both front seats in a matter of minutes and instantly felt the cooling. WOW. So amazing. After a while, it does make you feel like your backside is wet. I don't know if that is some kind of trick it plays on your brain or what. Just weird. We ran both off and on over 4 days and it did great (as long as I could keep ice). The website does not mention the size of the battery compartment or the connector type. I have other batteries that I could have used but one would not have fit because it is too long. If you are using in a vehicle, it doesn't work great with a head rest but we made it work. It also doesn't have a timer to auto shutoff the pump if it runs out of water. Don't know if this would damage the pump or not but I think it should have that just to save your battery. I'm very happy with our purchase. It provided just enough relief and respite from the heat in the truck.
I bought the ecto topr a couple of weeks ago for the Florida summer. I play golf two times a week at least and this is a game changer.. 10 pound bag of ice on medium or low setting last a full round. everybody on the golf course is jealous and I’m about to purchase a second one for my Best friend.
Works perfect and brings some nice relief in my old truck with no A/C on some long drives in this hot weather