Mk3 collar batteries

[kelpieferreter 34]

Good evening. Could anyone recommend the best batteries for the mk3 magnetic collars? I bought a box a few years ago and they were brilliant but can’t remember from where. I’ve read that the cheaper ones off eBay aren’t the best at lasting. I usually change them regularly although deben state that they should last 300+ hours. Rather replace them than lose a ferret. Thanks 

[ferret110 27]

rayovac are what they come with. Duracell are good

Edited December 27, 2018 by ferret110

[budgie123 163]

I would advice purchasing the hearing aid battery tester which you can test the collar batteries with. Available on ebay. It is a rayovac tester.

I used to do as you change them every so often but with the tester check them when required. So simple to use.

I saw it on a utube  video.

[kelpieferreter 34]

I found the box I bought and as suggested above they are rayovac. I shall look into the tester. Thanks!