Some charge controllers feature temperature foldback provisions that also help mitigate problems with charging batteries in cold climates. While the initial cost of lithium iron phosphate batteries is much higher, they can be an economically viable solution in the long run over many years, if your application experiences frequent high depths of discharge on a regular basis.Ĭold temperatures can cause damage when charging batteries, especially lithium batteries, so lead-acid batteries are advantageous to use in these conditions unless insulated enclosures can be deployed to ensure batteries are kept at acceptable temperatures. Properly maintained flooded batteries will also last longer than sealed batteries. The lowest up-front battery costs are associated with flooded lead-acid batteries, then sealed batteries, and finally lithium iron phosphate batteries. Lithium iron phosphate batteries also require less maintenance than flooded batteries so more of these battery types are being deployed in remote areas for solar-powered environmental monitoring systems, and other other long term, off-grid applications that are not regularly staffed with maintenance personnel. This can be a huge consideration if personnel are typically present at the site and the site is difficult to access. Lithium iron phosphate batteries are the safest lithium batteries to deploy in living spaces, although they are not generally considered to be as safe as AGM or Gel lead-acid batteries.ĪGM and Gel batteries don’t require maintenance like flooded lead-acid batteries. They don’t spill acid and they rarely emit gas so they are a good option to use inside living spaces. In terms of safety, AGM or Gel Sealed Lead Acid Batteries are a good choice. Experience with the battery chemistry type.
The best battery chemistry for your off-grid solar applications depends on a number of factors listed below: as opposed to starter batteries like car batteries that are designed for short bursts of energy output. Need to learn more about solar charge controllers? Visit our solar charge controllers FAQs.ĭeep cycle batteries designed to provide consistent power for long durations should be used in off-grid solar applications.
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