4 Volt 500 mah (0.5amp) Dimensions: ~ 58 x 36 x 20mm RB405 Mosquito Zapper Function: VRLA Battery Rated Capacity: 4V 0.5AH

Gave life to my Rs. 500 worth mosquito bat, which I did not want to throw away as it is in a good condition. Just had to undo the screws on the bat to open it, then pull out the red & black cables from the old battery, connect the cables to the new battery, put the screws back on and you are good to go. I had to cut the plastic a little bit to fit the batter properly. The best part is that I got 2 batteries for less than 150 bucks, which is a good deal. It's now 4 days & I recharged the battery a couple of times and it is working as expected.

Good product

Battery health drains instantly.

The cell does not charge, inspire for keeping it on charge for 13 hours as mentioned

Worth for money

I had tried to replace the batteries in my chinese night lamp and also in the mosquito bat. I knew it was easier and cheaper to get replacement parts for the same, but still I went with it for testing. It was a bad decision.

It was good but unfortunately I did not go by the identification number therefore received a longer battery which did not fit.

It works all right. Gives the right voltage. But drains off rapidly. I used it in mosquito squatter. After charging to full , it works well for 5-10 minutes but fails to give adequate high voltage output in the device. May be 500 mAh capacity is not enough to drive these devices.