This link will provide the Company I use
https://www.superbrightleds.com/?gcl...FQiNaQodDbICCA
Excellent service and pricing.
Your battery should have a manufacture date and are pro rated. You should also load test it, as it should be able to power lights for hours. Running a furnace on the other hand, a shorter period. You should have a guage monitor to monitor the draw, and battery life.
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