I don't know if this belongs here or deserves it's own thread, but in varying applications one might want to consider "useable" mAH.
A cell can have an X capacity, but once it reaches a certain ability to deliver energy to the end of circuit it will fall off/fail to deliver.
Just an observation, once a 3.7v battery regardless of capacity reaches 3.8-3.6v perfomance falls off greatly or fails. ( again depends on what your device is capable of using)
Charge it at this point. the remaining mAh is moot.
Google is a great search engine but unfortunately it doesn't filter out idiocy.
I had the misfortune of being googled here, only to discover a camel pile of dung. Not a single post above came up with anything substantial, only slurs and rants. No one offered anything worthwhile like WHY these 5000mah batteries might be bad. Did anyone do any measurements? Can anyone tell if even a modest 2400mah battery is genuinely of that capacity?
There will always be liars, as long as there're idiots who believe in them.
So enlighten us, FlashFreak. If you want to plunk down some money on some obviously fake 'camel pile of dung' batteries and test them, go ahead. Please feel free to report back when you are done with your tests. We'll just be hanging around here twiddling our thumbs and making fun of other fake crap.
Flashfreak, you're new here with 2 posts, so I'll try to be gentle.
People that know about batteries know that the max you can can buy nowadays is 3100 mAh, and even that's within certain technical constraints. 5000 mAh batteries might exist in a Panasonic lab or NASA, but they don't exist in the real world. That's why we can heap scorn on an ebay d**cheb*g like this.
To answer your other question, there are some 2400 mAh batteries out there that are actual capacity. There are others that aren't.
If you spend a bit of time here, you'll be able to know the difference.
Nah dude, 15A is baby’s task for those batteries. They can do 150A with ease.
actually 150A is possible to do (and so is 250A) for a 5000mAh mAh battery: http://www.hobbyking.com/hobbyking/store/__17271__Turnigy_nano_tech_5000mah_1S2P_50_100C_Hardcase_Lipo_Pack.html :p
Sorry, I didn't see the link at the bottom of your post - my office is too brightly lit for pale grey tiny text to show up. I'm pretty sure those do - but not in an 18650 size.
But they do 5000 mAh and 250A continuous in just a bit over 18650 volume (pi*18265 = ~660 cm3), and BOATLOADS less than 26650 volume (almost half, in fact - pi262*65, 1400 cm3), being 810 cm3.
Should be pi * r squared, not d squared. so is 3.14159 * (9*9) * 6.5 = 16.54cm3 or for a 26650 pi*1.3*1.3*6.5=34.51cm3
The HobbyKing pack is 9.32*4.7*1.85cm = 81.04cm3 - or about the same as 5 18650s.
Using 5 IMRs in parallel (same volume, though I suspect rather more weight and bulk) you should be easily capable of 100A - just not for very long. At best 40% of the capacity
Apologies for the pedantry - I used to teach this stuff.
Those GTL brand they are claiming 2500mah on AAs or 14500s. So 5000mah doesn’t suprize me since it’s 2X the size? that store has 99.2% positive feedback and for it’s volume per month the negatives are pretty low. About 50 sad customers out of 2500 that’s pretty amazing. Funny how most of the complaints are CR123s, AA & AAAs.