Why does the UPS use LiFePO4 battery than Lead-acid battery?
Editorial:
Issue Date:2019-11-29
Views:1334
The “most popular” lead-acid battery
UPS applications typically use lead-acid batteries, but apart from the advantages and disadvantages of the battery itself, the only benefit to choose Lead-Acid battery may be the price. The lead-acid battery was invented in 1859 by French physicist Gaston Planté and is the earliest, was the first rechargeable battery for commercial use, yet still most widely used, type of rechargeable battery.Depending on the depth of discharge, lead-acid for deep-cycle applications provides 200 to 300 discharge/charge cycles. The primary reasons for its relatively short cycle life are grid corrosion on the positive electrode, depletion of the active material and expansion of the positive plates. This aging phenomenon is accelerated at elevated operating temperatures and when drawing high discharge currents. - Battery UniversityCharging a lead-acid battery is simple, but the correct voltage limits must be observed thus you have to charge it with an exact lead-acid battery charger (Nominal cell voltage: 2.1 V). Lead-acid does not lend itself to fast charging and with most types, a full charge takes 14–16 hours, and it must maintain full state-of-charge, the low charge causes sulfation, a condition that robs the battery of performance. Right now, perhaps the lead-acid battery is excellent for use in a UPS. The battery is continuously charged in the UPS, and its charging speed does not need to be considered. Moreover, the life of the lead-acid battery is long, and it is also suitable for use in low-temperature environments. temperature interval: Min. −35 ° C, max. 45 ° C), the most important thing is that it is cheap. The price of lithium batteries is almost a few times that of lead-acid batteries. Is that true? Depends. If this is simply the case, then lithium batteries have no advantages at all? Lead-acid batteries do have a long life, but lithium batteries do the same and don’t require time to maintain the battery. LFP can have at least 2,000 full charge cycles before it goes down to 80% of its original capacity. So, if your UPS comes online once a day, then the LFP pack can last at least 9 to 10years without maintenance. Tele-com lead-acid UPS is replaced every 3–4 years. Data centers replace their lead-acid UPS every 2–3 years. The cost of LFP is roughly 2 times the cost of lead-acid batteries. So, you can do this simple Total-Ownership cost for both types of chemistry. [caption id="attachment_938" align="alignnone" width="862"]

- Low price
- Raw materials are easy to explore
- Stable performance
- Easy to recycle
- Suitable for high current discharge
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