Neptune Solar Collecting Post Cap with Accessory Connection by LMT Mercer

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LMT Mercer's Solar Collecting Post Caps allow you to install side-mount or under-mount lighting without a transformer! The solar collecting cap includes a 600 mAh battery and a female accessory connection which attaches to the solar light of your choice or a 2-foot harness extension (sold separately). Connection wires from the solar collecting cap to the light fixture(s) are hidden within your post sleeve and rails for a completely professional look. For convenient installation, the cap includes mounting templates for all three styles of lights offered by LMT.

Please note: this cap acts as a power source and is not itself a post cap light.

The Neptune Solar Collecting Post Cap has curved edges and a tiered look with an unobtrusive 2-1/4 inch square solar panel at the top.

Solar lights and wiring components are sold separately.

Unsure about your size? Measure your posts carefully and use our Post Cap Diagram to understand critical dimensions and ensure a proper fit.

More Information
DecksDirect # 6460

Solar Installation Instructions  (513 KB) 

LMT Solar Warranty (122 KB) 

FinishesBlack Hammertone and White
Pack SizeEach
BatteryLithium Ion - 600 mAh 3 volt battery
Post Cap Opening Size4-1/16 in, 5-1/16 in, 6-1/16 in
Material TypeVinyl
(width x depth x height)
4-1/16 in: 6 in x 6 in x 2-1/8 in
5-1/16 in: 7-1/4 in x 7-1/4 in x 2-1/4 in
6-1/16 in: 7-1/4 in x 7-1/4 in x 2-1/4 in
Inset Measurement 1/2 in
Package Contents(1) post cap with (1) 600 mAh 3 volt battery and female accessory connection, installation instructions
Compatible Solar LightsSolar Dome Side Light, Solar Stair/Side Light with 2 Covers
WarrantyView LMT Warranty Information

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