Lithium shuttle battery?

I bought the unit last year when they came out. Last year it worked great and would last all day of fishing. This last weekend I was fishing devils lake and my flasher died at 3 pm both days with starting fishing at 7:30 am. The weather was nice so I was not using a house. The back light was at 20 and the unit wasn’t running all day as we did a lot of running so acual time of using the flasher was 4 to 5 hours a day. Is there a replacement battery that I can buy?

from what I remember there are a ton of lithium battery cartridges under the unit, not 1 single battery pack. You could probably get replacements at Batteries+

I would email Marcum first and see what they say

I have looked at the battery and it is replaceable. It’s a easy circuit. I called marcum and left a message as “all the technical advisors are busy”. I’m old school I would rather talk to someone in person or on the phone which is getting harder and harder.

I’ve never had an issue with Marcum’s email support request, typically responded back the same day…