All batteries, regardless of the chemistry or manufacturer, are affected by self-discharge. Age, cycling, and storage conditions are just a few factors that influence a battery’s self-discharge rate. Some battery chemistries are more prone to self-discharge than others. The below table summarizes the expected self-discharge rates of battery chemistries offered by HDP.
|Battery Chemistry||Estimated Self-Discharge|
|Primary Lithium-metal||10% in 5 years|
|Rechargeable Lithium Ion||5% in 24h, then 1 - 2% per month (plus 3% for protection circuit)|
|Nickel-Metal Hydride||10 - 15% in 24h, then 10 - 15% per month|
|Low self-discharge (LSD) Nickel Metal Hydride||15% in 1 year|