Lithium-ion batteries and lead-acid batteries differ significantly in how often they should be charged due to their chemistry and charging characteristics.
Charging Frequency for Lithium-ion Batteries
- Lithium-ion batteries, including types like LFP (Lithium Iron Phosphate), are designed to be charged frequently and even partial top-ups are recommended. For example, Tesla recommends plugging in their LFP battery electric vehicles as often as possible, even after short trips using a very small portion of the battery, without worrying about the memory effect.
- Charging lithium-ion batteries to 100% daily is generally fine for LFP types, and a full charge to 100% once a week is advised to maintain battery balance.
- Lithium-ion batteries typically last 300 to 500 full charge cycles at their standard charging voltage (4.20V per cell), but their cycle life can be extended by charging to lower voltages, albeit at the cost of reduced capacity.
- Unlike lead-acid batteries, lithium-ion batteries do not require deep discharges before charging and can be topped up frequently without damage.
Charging Frequency for Lead-Acid Batteries
- Lead-acid batteries generally require less frequent charging compared to lithium-ion batteries. They benefit from being fully charged after each discharge cycle to avoid sulfation, which can damage the battery and reduce lifespan.
- Lead-acid batteries typically do not tolerate frequent partial charges well, and their lifespan can be shortened if they are kept at partial states of charge or not fully recharged regularly.
Summary Comparison
| Battery Type | Recommended Charging Frequency | Charging Notes |
|---|---|---|
| Lithium-ion (LFP) | Charge as often as possible, even partial charges | No memory effect, frequent top-ups encouraged |
| Lead-acid | Charge less frequently, typically full recharge after discharge | Avoid partial state of charge; sulfation risk if undercharged |
In essence, lithium-ion batteries can and should be charged more frequently, including partial charges, whereas lead-acid batteries require less frequent, more complete charges to maintain health and longevity.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-often-should-lithium-ion-batteries-be-charged-compared-to-lead-acid-batteries/
