The oem lift master batteries 041b0591 are a direct replacement for the 2 batteries located in the battery back up unit lm475. The ever charge unit is used with the lift master 3800 jackshaft garage door opener and estate series models 2500, 2500b, 2500d, 3500, 8500. Simple installation and certified lift master 100% product by aod retail with 1 can lubricant for service on door and hardware. Please note black plastic housing not included. Batteries only that are inside unit- opens with a few screws.
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2 months ago
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