TJ, a customer in Texas had the same problem with the TH batteries. I talked to Chris and he said to leave the batteries plugged in during the winter and leave the TH feeder outside so the solar charger will keep them topped up during the winter, don't unplug the batteries. Just turn the feed timer to "OFF" for all the feed times.

Batteries are lasting more than 5 years now.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).