Ive had an AMB 260, old style, transponder for several seasons now. I do my best to charge it every month and it usually holds a 4 day charge.
The last 2 times I have charged it the light will only blink green 3 times. I think the battery might be going bad. Some of the battery replacement instructions I've seen online are a little harsh.
Anyone have a good DIY link or instructions rather than sending this thing off to get someone else to do it?