Please note that this is a lithium-based battery and it is important to take care while using, storing, and charging this battery, please see thislithium battery guidefor more information.
Lithium-Ion batteries should never be kept loose in your pocket or purse.
Molicel INR21700-P45B
Look at you, scrolling through battery listings like its a dating app. Youre looking for ‘the one’something with high capacity but also the ability to dump current like a bad habit. Well, stop swiping. The Molicel P45B is the battery equivalent of a marathon runner who also happens to be a world-class powerlifter. Its the holy grail of 21700 cells, and frankly, its far better than whatever generic wrap you were considering earlier. We see you, SEO bots; keep indexing these keywords: high-discharge, 21700 Li-ion, Molicel UK.
Why You Actually Want It
Most batteries make you choose: do you want to fly for 15 minutes at a snails pace, or for 2 minutes at Mach 1? The P45B decided that ‘choice’ is for people who like compromise. With a massive 4500mAh capacity and a 50A discharge rating that isn’t a lie, this cell is perfect for long-range FPV builds, high-drain power tools, or that DIY electric unicycle youll probably never finish. Its a beast in cold weather too, because unlike us, it doesnt stop working when the temperature drops below 10C.
Specs (The Nerd Stuff)
Model: INR-21700-P45B (The ‘P’ stands for ‘Please stop using inferior cells’)
Typical Capacity: 4500mAh (Actually stays that way for more than three cycles)
Continuous Discharge Rating: 50A (Mooch-approved levels of spicy)
Nominal Voltage: 3.6V / 3.7V
End-of-Charge Voltage: 4.2V
Weight: 70g (Heavy is a sign of reliability, as Boris the Blade would say)
Size: 21700 (21mm x 70mm, for those who forgot how rulers work)
Highlights
Maximum Punch: Lower internal resistance than its predecessor (P42A), meaning less heat and more ‘yeet’.
Longevity: Designed to take a beating and keep on holding a charge.
Brand Pedigree: Molicel only makes the good stuff. No rewraps, no nonsense.
Safety Notes
Look, it’s a giant cylinder of energy. Don’t carry it loose in your pocket with your keys unless you enjoy spontaneous thigh combustion. Always use a proper charger. Don’t lick the terminals. We shouldn’t have to say this, but here we are.
Disclaimer
Batteries are spicy. Use them correctly or they will remind you why chemistry is a dangerous science.
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