Sanyo UR18650ZT 18650 2800mAh review/test

[relic38]

I ordered 10 more ZTs from Fasttech. That should hold me for a while. A total of 20 cells, plus six Panasonic NCRAs. Most have homes already, so not too many will be spares.
With the BLF code they are about $4.60 each, shipped.
I will point out that the date code on these is from late 2011 ( P35C ); about 1.5 years old. There is no indication they have been used.
My first batch arrived with a 3.8-3.9V charge, and are working good so far.

[deathless]

@JackCY

@Shadowww

Yes there is - HKJ’s latest one.
Test of Sanyo 18650 2600mAh (Red) bv

Damn, I have a timing, you must have made it just today! I’ve looked there so much today, good tests HKJ

Please is it really red cover on the 2800mAh ZT version?
It looks like orange and elsewhere is named as UR18650ZT 2800mAh violet/orange 4.3V.
What does the “bv” mean in the name you gave it?
You can see a wide selection of Sanyo, LG, Samsung on keeppower, Sanyo’s (FM and ZT, unprotected and protected (probably made in house) as well) have a good deal on FastTech. That’s where I want to get a couple of Sanyo’s and decide whether to take a ZT or FM.

Here are my notes and what I found elsewhere:

Code	stated mAh	ring	sleeve	Volt
UR18650W2	1500	pink	red	4.2
UR18650FJ	2200	red	red	4.2
UR18650A	2250	violet / white	red	4.2
UR18650FK	2400	green	red	4.2
UR18650FM	2600	teal blue	red	4.2
UR18650ZT	2800	violet	orange	4.3
UR18650ZTA	3000	yellow	violet	4.35

And many more!

The ring color denotes capacity.
The cover color probably indicates different voltage.

UR18650FM is a good battery so I’m interested to see how do the newer ones perform.
Yes if they are 4.3V and 4.35V, their capacity at 4.2V will be around 2650-2800.

They can be easily compared to the LG an Samsung 4.3V 18650s.
This includes the UR18650FM 2600mAh!
See HKJ’s comparator. (pics below)

What a surprise right? UR18650FM is very similar to LG 18650 C2.

HKJ can you determine what is the final voltage of a particular battery?
Can the Sanyo UR18650FM hold 4.3V as well? Or 4.25V?
I think lithium batteries are not tolerant to overcharge?
Basically the battery should start to heat up when it begins to get overcharged and it won’t hold the higher voltage.

How do you charge the 4.3V and 4.35V batteries to this voltage?
The Imax you have, or am I wrong?, can be set to charge to higher voltage?

Here you find the 2800mAh Sanyo as well, it scored pretty bad though, as did the 2800mAh in HKJ’s test. Ebay source, UK seller big_f_d_d. You have to check other batteries from the shop to see their discharge comparisons.

Thank you! This is exactly what I was looking for!