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New nickel-iron battery charges in seconds, survives 12,000 cycles
(interestingengineering.com)
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this post was submitted on 13 Feb 2026
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It makes sense to me to have low power chargers on a UPS. Once your power comes back online, it needs to deliver enough juice to power everything plugged into the UPS plus the battery charger. A fast charger would be more likely to trip a breaker.