Big batteries. 46800 and bigger

texas cop

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I can't lie I like big batteries. The latest in the race 46110. https://www.nealsgadgets.com/products/lumintop-gt110-flashlight. Other lights; https://www.nealsgadgets.com/products/lumintop-mach-46950-flashlight https://www.nealsgadgets.com/products/lumintop-gt46-flashlight So we have 46800 25,000mah, 46950 32,000 mah and 46110 with 38,000mah. These batteries have the same diameter as 3-21700's but with a little more length and a whole lot more capacity. Most of these cells are manufactured by Eve geared towards BMW and Tesla in the EV race. Is this a possible trend for newer soda can lights and long range throwers?
 

orbital

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Always interesting when some big changes in the flashlight world.

One thing to take into account is the charge time. Type C maxes out at 5A regardless of voltage & would probably be only doing 3A here.
If the 46100 battery has around 150Wh capacity,, you can see it'll take most the day to charge if using Type C

Not saying this is bad,, just you can get a charger that'll charge three 21700s' @ 2A each taking less than a couple hours.
..this in a similar size light with added voltage benefits.
After saying all that, I'd still like to have a giant Li-Ion light,, just because

some more info on bigger cell lights::


and BMW batteries:
 

texas cop

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These cells are set to be the new wave of EV and home power storage. Originally the smaller 18650's were computer batteries and we gleefully shoved them into flashlights and started the mad hobby most of us are in. Then the cells got bigger and more efficient so did our desire to push the lumens. Now we have car batteries, the future is looking brighter.
https://www.linkedin.com/pulse/46-series-battery-performance-summary-iccsino
https://www.linkedin.com/pulse/comparison-eve-4680-4695-cells-keven-chen
https://www.linkedin.com/pulse/series-46-battery-specifications-keven-chen
With the last one having a good set of specs also listed in the comment section. These batteries derive their capacity from a 1/3C drain. Some of these cells are Iron phosphate most are Lithium-ion.
 

idleprocess

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I was once enthused over the prospect of TSLA 4680 cells which - assuming similar performance metrics to high-density 18650/21700 - should weigh in at around 25Ah and deliver around 50A / 180W. The hyped TSLA special sauce was supposed to more than compensate for the less-advantageous surface area:volume ratio of 4680 (0.87) vs lesser cells (18650: 2.23, 21700: 1.91).

However about three years on and TSLA has yet to meet their own hype and these wunder cells do not seem to be available to the hobbyist. What is being made available look to merely be conventional chemistry packed into a new formfactor with the predictable tradeoff to charge and discharge rates.
 
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