MNRE releases specifications for Li-ion batteries used in off-grid solar

The Ministry of New and Renewable Energy (MNRE) has announced draft specifications for lithium-ion (Li-ion) batteries for distributed solar applications under various schemes. These batteries will be technology neutral. Currently, lithium ferro phosphate (LFP) batteries are being provided for solar street lights of 12 watts as well as for study lamps. The MNRE has clarified that lithium chemistries other than LFP may also be allowed to be installed with these systems. Some of the technology-neutral specifications are a minimum specific energy requirement of 100 Wh per kg, charge discharge cycles of 2,000 cycles at C/10 rate and at 25 Celsius, and a minimum 85 per cent depth of discharge.

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