Lithiam AA AAA

Golden_HVAC wrote:

RJsfishin wrote:
I wonder when small LI batteries will become available at a civilized price ??
Opened up another flashlite yesterday,.. full of.ka ka acid corroded crappy duracells !! And I just used it 2 weeks ago.
6 months ago (posted here) my bath scale was flippin out,.....opened it up to acid drippin crappy duracells,....I can believe this crappy design isn't outlawed !
Now, like last time, start defending Duracell......it is the worst of'm all.

I have not used disposable batteries in a long time. Usually I am using rechargable 1.2 volt Nickle metal hydride batteries, or Li-Ion 3.7 volt batteries.

Here is a charger for three size 3.7 volt LI-Ion batteries.

http://www.aliexpress.com/item/Single-slot-Universal-Li-ion-Battery-Charger-for-18650-14500-16340-10440-Battery/32433145109.html

I have two of the chargers, and that led to the question what are 10440 batteries? What are 14500 batteries? They are the same diameter as AAA and AA batteries respectively. But they are 3.7 volts and close to 2,000 mA. So I ordered 8 each of the AA and AAA battery and they are the same diameter and length as the 1.5 volt disposable battery. But LI-Ion are 3.7 volts.

So by installing 5 of the 1.2 volt batteries and 1 each 3.7 volt battery in a remote control car, it runs quickly, and lasts a long time, much better than the 6 each 1.2 volt batteries.

This is the battery I bought. Same length and diameter as the AA battery.

http://www.aliexpress.com/item/4pcs-lot-3-7V-2300mAh-14500-AA-Li-ion-Rechargeable-Battery-For-Flashlight-Torch-Purple/32445843189.html

As for flashlights, I have been using the 3.7 volt 18650 Li-Ion battery. It is 18 mm diameter, and 65 mm long. Some are rated at 5 AH while others are as high as 9.8 AH. I have one flashlight that is 2000 Lumens (equal to a 120 watt incandescent) that holds 1 to 4 batteries, and by using the 9800 mA battery, it will hold 39.2 AH at 3.7 volts!

Most of the time at work I carry a 300 lumen flashlight with one battery 3.7V @4,000 mA and LED of course. It was only $5. Battery runs from $1 to $2 depending on vendor, amount bought at once, and mA rating.

Battery charger above is only $1.27.

If you want normal NiMH rechargable 1.2 volt batteries, they have them. I bought some 3000 mA AA batteries for only $1 each when I bought 48 at once, free shipping. I am using a LOT of them for the Christmas toys.

Good luck,

Fred.

Whoa! Fred, don't mix battery types. A 3.7V can discharge some of its power very rapidly into the normal AA cells, potentially causing a fire or a POP. It isn't even a good idea to mix unevenly-charged LiIon cells, they can do the same thing. People say "It'll never happen to me" right up until the day it happens to them.

I have bought a few of those Energizer Ultimate cells for use in items that sit around a long time and then get used intermittently (like my camping shaver). They work great. I have some of the 3.7V LiIon cells for my flashlights, but I only buy ones with protection circuits or the (safer but less energy density) IMR, Lithium Manganese Oxide, cells. But far and away I prefer low-self-discharge NiMH rechargeables like Eneloops; these are the workhorses for most devices and I recharge them with a MAHA Powerex MH-C9000.