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Lead acid batteries are lousy with a full depth of discharge, but for partial discharges, such as car starter batteries, or solar powered telemetry stations, th
by ac29 7y ago
Lead acid batteries are lousy with a full depth of discharge, but for partial discharges, such as car starter batteries, or solar powered telemetry stations, they can easily have 1000+ cycles of lifetime. If an Iron-ion battery could replace these applications economically, that would be a huge market. Lithium iron-phosphate batteries are great for these purposes, but cost nearly 10x more than lead acid.
- taneq 7y agoWhen you say "1000+ cycles" do you mean 1000 discharge-a-bit / recharge-a-bit cycles, or an equivalent total energy storage to 1000 full cycles? If the latter, then it's a bit misleading to discuss "cycles". You're actually getting 1000 cycles to 10% depth of discharge, which is equivalent in terms of total stored energy to 100 cycles at 100% depth of discharge.
- ac29 7y agoAnecdotally, when dealing with lead acid batteries, 1 100% discharge is much worse in terms of cycle life than 2 50% discharge cycles or 10 10% cycles. Other chemistries dont have this problem, or are less affected.