We recently posted about the new and upcoming Flex Stacked Lithium batteries, which promise to deliver i) more power, ii) longer runtime, and iii) faster charging rates.
Full details still aren’t available yet, but new details have trickled in.
Flex reiterates that their new technology promises many advantages over traditional Lithium Ion batteries:
- Significantly more power (watts)
- Significantly faster charging
- Significantly longer lifecycle
These are their exact words. Flex previously quantified the differences, claiming 20% more power, 25% longer runtime, and up to 50% faster charging.
These claims aren’t exactly new, but Flex also provided information as to the charge capacity and sizes of their new Stacked Lithium batteries.
Flex Stacked Lithium Battery Sizes
Flex says their 3.5Ah Stacked Lithium battery is similar in size to a typical 2.5Ah battery, the 5.0Ah battery is similar in size to a typical 5.0Ah cylindrical battery, and the 8.0Ah battery is similar in size to a typical 6.0Ah cylindrical battery.
With traditional cordless power tool batteries, 2.5Ah is generally the limit for 5-cell battery packs engineered with 18650-sized battery cells, and 10-cell batteries are typically limited to 5.0Ah when engineered with 18650-sized cells. Stepping up to higher battery charge capacity sizes typically involves larger 21700-sized Li-ion cells, which leads to larger battery size and weight.
As Flex’s cordless power tool system is centered around a 24V Max battery form factor, their batteries are larger than typical 18V battery packs, but roughly similar to higher capacity 18V batteries.
With Flex Stacked Lithium tech allowing for a higher charge capacity in the same form factor as their standard batteries, users can benefit from a bump-up charge capacity and longer runtime without the typical increase in battery size or weight. This is on top of the Flex’s claims about greater power delivery potential and faster charging.
Full details on Flex Stacked Lithium are not available yet, and we’ll update you as we learn more.
Note: Flex is a ToolGuyd sponsor.