Trick Roofers Dont Want You to Know

        Before anything, I'll briefly explain what 18650 cells are and what uses they may have. I have worked a lot with 18650 cells and I used them for pretty much anything that needs power.
Basically, they are Li-Ion cells, that means they have the same overall parameters as a now-days phone bombardment. Their nominal voltage is three.7V or iii.6V, but this is not too relevant. What'due south important to notation is that they are fully charged at iv.2V and they are considered discharged at 3.3V. Overcharging or excessively discharging them will shorten their lifetime.
The cells can be used for quite a lot of applications: flashlights, lasers, measurement tools, even power tools (simply in this case some special ones are used that can provide higher electric current and have lower capacity – I will non talk over the tech details here). Practically, anything that used to be able to work with 3 AA/R6 or AAA/R3 batteries can exist safely used with an 18650 cell. If the space weather are met, information technology'southward really skillful to have only i standard type of cell for annihilation. It'south very useful instead of having various sizes of rechargeable batteries.
Now, to get to the bespeak of the article: there are many dozens of types of 18650 cells that can exist found in shops, on-line sites or laptop batteries. I volition try to explicate here how to find the correct capacity for the biggest 18650 cell manufacturers effectually. Note that ripping old laptop batteries is a expert near-free way to learn cells. Commonly, you lot will discover a dead pair, a good pair and i-2 intermediary ones (assuming at that place are three/4 pairs in the battery). Most of the fourth dimension the cells that have 2V+ when ripped out tin can recover most of their capacity when charged, while the ones nether 1V are no longer usable and will overheat if yous endeavour to charge them.
In that location are 4 very large companies that produce (used to be) very good quality cells: Samsung, Sanyo, Sony and LG. And in that location's likewise the 99.998% fakes called Ultrafire. Practically, all Ultrafire cells on the online market that state whatsoever capacity over 3000mAh are fakes. Since at that place are other fake cells with false-stated capacity, I'll tell you how to detect them too. Fist of all, they take stated capacities of over 4000mAh, which is not currently possible. The best confirmed capacity original jail cell at this bespeak has 3400mAh. 2nd, their weight is lighter. Original cells are 45grams+. Fakes have mostly nether 40g, and the worst quality ones are fifty-fifty 20g. Those have an effective capacity of under 500mAh, fifty-fifty if they land 4000mAh+ on the label.
Now, for each of the four big companies I'll tell you how to come across what actual capacity a jail cell is. I'll likewise post RGB values, since the pictures may non expect 100% similar the original.

        Samsung
Most Samsung cells in circulation are kind of Cyan color (RGB: 80,255,255). Note that other smaller companies utilise this color, simply only the Samsungs have Samsung written on them.
Hither is the color I'm talking about – in this picture we have a 2000mAh cell. Aforementioned color can be found for 2200mAh (most common) and 2400mAh.

The 2000mAh ones tin can also exist light blue (RGB: 40,200,255).
Low-cal light-green (RGB: 15,240,115) is used by Samsung for 2200mAh and 2400mAh cells:

The majority of the 2200mAh cells are Cyan, similar the picture show with the 2000 ones. The greenish version is the newer 2200 model.
Virtually 2400 mAh cells are DarkSkyblue (RGB: 0,120,240):

The 2600 mAh cells from Samsung come in simply ane color then far – Ugly Pink (RGB: 255,128,255):

Note that it'due south more than pink/ugly when seen alive.
Samsung also has 3000mAh cells on the market, which are not that ugly every bit the pink ones (RGB: 100,133,200):

Since for 2000,2200 and 2400 mAh jail cell things can get confusing when information technology comes to colors, the best fashion to identify chapters is from the finish of the line number in the first text line on the jail cell (the row where it says 18650). As you can meet in the pictures, that's exactly what 20,22,24,26 and 30 mean – information technology'due south the capacity tag for any Samsung cells. Then at that place you take it, you can now identify whatsoever Samsung prison cell.

Sanyo
Most Sanyo cells are RED (RGB: 255,0,0), or the new fakeRED (RGB: 255,0,64) that's infested with blue (we'll talk most that afterward). They are the most hard to identify overall.

This is how a real red cell suppose to await like (RGB: 255,0,0):

The 2000mAh original ones are indeed red by whatsoever standards. The cap is white. So if it'southward pure ruby-red ones it's 2000mAh capacity. The newer ones were likewise fakered (RGB: 255,0,64), but the cap is even so white.
Here they are:

The 2200mAh cells and above are fakered (RGB: 255,0,64). It's hard to detect in a picture, but there's a clear tendency towards purple for those.

You can tell the cells that have 2200mAh capacity be the RED cap. Yeah, the cap is true red, unlike the rest of the jail cell.
The 2600mAh ones are also fakered (RGB: 255,0,64), simply those have cyan cap. Don't get tricked by the red in the picture, it'southward a lot more than towards purple in practice:

The new 2800 and 3100 capacity models are orangish and purple, simply I haven't seen any even so, so I won't mail service them yet.

The high power cells (similar the loftier current 1500mAh ones used in ability tools) have a pink or light blue cap.
So, to identify the Sanyo cell, you'll have to apply actual colour nuance and cap colour, since the series written on them are most of the time barely visible.
Still, I'll list the known series so y'all know what'due south what if you can really read it from the prison cell:

UR18650EA 2350mAh High Drain
UR18650RX 2050mAh High Drain
UR18650W2 1600mAh Loftier Bleed
UR18650WX 1600mAh High Drain
UR18650A 2250mAh Standard
UR18650AA 2250mAh Standard
UR18650ZY 2600mAh Standard
UR18650ZT 2700mAh High Capacity
UR18650ZTA 3000mAh High Capacity

Panasonic
They are function of the above, and then I did non consider them a dissever visitor.
Panasonic has 3 common cells in circulation.

The lime-green (RGB: 200,255,127) has 2250mAh:

There is a 2900mAh prison cell that is ugly gray (RGB: 163,163,163) :

Their newer blue-infested green (RGB: 0,255,127 ) cell has 3100mAh:

Sony
Sony are standard green (RGB: 0,183,0). All of them are the aforementioned green so we'll have to identify them differently. The way to place them is the Thousand-number.
On the second line, the outset number subsequently the M is the capacity identifier.
Here's the 2200mAh cell:

Hither we take the 2400mAh cell:

And finally the 2600mAh one:

Equally you lot can run into, the 2000mAh cell is marked with G5, the 2400 ane with G7 and the 2600 one with G8.
That's how to tell them apart. There's also another important divergence for the 2600mAh cell: it's case does not encompass the lesser at all, dissimilar the 2200 and 2400 ones at that place it'due south bent and covers nigh 1mm of the bottom part. I remember 2400mAh cells exercise exist that have no bottom comprehend also, but are in significantly smaller number.

LG
Last ane in the big league is LG. In their case, the series on the cells are a large mess and will never make sense unless yous search for them and even then you lot may not find anything relevant. Simply the good thing is that they can be identified very easy by color.
The 2000mAh cells are pale orange (RGB: 255,155,112); they can all the same be institute effectually:

The 2200mAh are grayness (RGB: 172,172,183). They are still one of the well-nigh common LG cells:

Probably the nigh used LG cell today is the 2600mAh ane which is orange (RGB: 255,155,63):

LG as well has some new cells rated at 3100mAh (RGB 147,147,255):

No, they're not every bit ugly as the Samsung pinkish but not very pleasant to look at either.

As y'all meet, the good style to place LG cells is directly by colour.

        So there you take it – each 1 has a trick: for Samsung you accept to bank check the tag at the end of the line, for Sanyo the cap for Sony the G-spot and for LG only the cell color.

        If y'all have any unidentified cell, don't hesitate to postal service a link with a picture of it and I'm sure nosotros tin can find what's with it.

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Source: https://xaeus.wordpress.com/2016/09/08/how-to-identify-18650-cell-capacity/