OneCharge Compares TPPL Batteries to Lithium-Ion Batteries

As lithium-ion batteries continue to grow in popularity, lead-acid battery manufacturers are beginning to offer thin plate pure lead batteries (TTPL), an offspring of the absorbed glass mat (AGM) technology, as an alternative.

TPPL batteries and AGM batters are both lead-acid. TPPL batteries work in a very similar way to the AGM battery. The total time it takes for a TPPL battery to reach its full charge is reduced, but these batteries need to be brought to full charge to limit sulfation.

The largest difference between AGM batteries and TPPL batteries is the rate of charge. TPPL batteries can absorb more charge than the standard AGM battery. This means a TPPL battery could charge quickly up to 70 to 80 percent, but it takes a longer time to get the battery to the fully charged state. TPPL batteries also need about double the nominal capacity to do the same job.

TPPL batteries have a high rate of charge and discharge. This increased rate translates to an increased level of internal heat inside of the battery, which could cause a reduction in the life expectancy of TPPL batteries.

Even if proper care is taken of TPPL batteries, it will not have as long a life expectancy as the majority of lithium-ion batteries. Lead-acid batteries will also lose its capacity when being used at a permanent partial state of charge, or “opportunity charged”, unlike lithium-ion batteries.

When a TPPL battery is brought to a full charge, the battery could be stored for several months without losing any charge due to the low self-discharge rates that are found with TPPL batteries. In contrast, some Li-ion batteries have an “on-off” button to switch off the battery when not in use for as long as 6-12 months.

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