This is a 24V bank of NiFe batteries with 20 cells
Invented over 100 years ago by Thomas Edison as a non-polluting and non-consumable alternative to Lead Acid Batteries using no heavy metals! Now manufactured once again worldwide after lead acid battery companies closed Edison's Plant in 1972.
We have sourced NiFe at a competative rate at a little over double our cheap lead acid range and similar to our Rolls battery prices. This makes them a very viable option for long term off grid solutions.
You need 10 cells to make up a 12V bank, 20 cells for a 24V bank and 40 cells for a 48V bank
They have low operation cost, low self-discharge, long cycling life and environmental-friendly. They can withstand deep discharge, wide temperature variations, mechanical & electrical abuses and still show excellent and reliable performance over a long period. The operation life of solar Ni-Fe batteries is 30-40 Years, the working temperature range can be -40°C to 60°C, which is also the longest life battery for the PV system.
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These have a long lead time as they are made to order and shipped over to us, please allow 2 months for delivery, but for a battery that will out live any other battery if your deciding to go down this route its definitely worth the wait and this is the reason we can keep the prices low.