Does anybody know about a review of Sanyo UR18650ZT 18650 2800mAh?
Did anybody ever bought them around here?
Can’t find anything apart from color codes of Sanyo batteries and such.
2600mAh has been reviewed and is pretty good.
Want to know how does the 2800mAh hold up? Or even the rare Sanyo UR18650ZTA 18650 3000mAh.
Here’s a comparison between them at 2A discharge:
Taken from this page: http://www.dampfakkus.de/akku_auswahl.php
Note that 2800mAh Sanyo’s need 4.3V charge voltage in order to reach full capacity.
Mmm… great web with great info 
Thanks for the link, shadow, directly to favs 
It’s a great homepage indeed. Funny I haven’t seen it yet…
Sadly there isn’t a single test of that cell with 4.2 V available….
Yes there is - HKJ’s latest one.
http://lygte-info.dk/review/batteries2012/Sanyo%2018650%202600mAh%20(Red)%20bv%20UK.html
MB5M40 it is…
Nope that’s UR18650ZT.
Sanyo doesn’t makes “MB5M40” cell. HKJ is a human, and like all humans, he makes mistakes sometimes
I did not make that mistake, that was a copy from the website. But I do make mistakes and the only way to fix them is if somebody tells me about it.
So is it really UR18650ZT @4.2V?
It seems to be the same discharge curve like xtar 2600 or formerly listed Sanyo black. On hkjs site
But on lygate not. Iam confused…
HKJ could you please list the real names, normally they are printed on the cells. If you have to peel off the shrink you could fix this easily. On fast tech there is shrink tube very cheap…
His info box says “UR18650ZT” already.
Where can’t see?
Look at this nice comparison:
http://www.dampfakkus.de/akkuvergleich.php?akku1=98&akku2=141&akku3=122&akku4=103&akku5=118&akku6=91&a=3
There the 4.3V Sanyo is the best and its cheap, too sad that there is no protected version available…
And we don’t know how it behaves at 4.2V
And then compare on hkjs site, i am confused about Sanyo cells…
This tested cell is worse than a trustfire flames 3000…
Generally I list the name the batteries are sold under, i.e. if I buy a battery that is called "Sanyo 2600mAh", I will list it as "Sanyo 2600mAh".
In the actual test/review I have a info box where I will list the actual cell name (If I know it), where I got the battery and a lot of other stuff.
I have checked my ur18650zt from cnq with clear tube and I can read it clearly against light, engraved from top to bottom. Right there where the two parts of the outer cell meet, i will make a photo…
Quick shot taken
Awesome find, thanks. Have looked around 2 times for a long time, spent days searching comparisons and just couldn’t find that one. Silly language barrier.
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.
JackCY, I have UR18650A’s with white ring (on top) - I think you should add that to the list
“Confirmed”. It’s not hard to find out, just put the code name into google images :bigsmile: Chinese shops (alibaba) will show up and their pictures of batteries. So yeah, some may be fakes, some not, but hey, we all shop on Chinese shops mostly anyway.
^did I forgot this or not, maybe broken image link.
It’s a guide how to decode the Sanyo batteries.
Just wondering, where you got Sanyo 3000mAh cells for testing? And, seeing how poorly they did, have you charged them up to 4.35V?