Sanyo NCR18650GA 3.6V (3500mAh, max. 10A)

I found today, newest cell from Panasonic/Sanyo.

- Rated Capacity: 3300mah (0.67A discharge at 20°C)
- Minimum Capacity: 3350mAh (0.67A discharge at 25°C)
- Typical Capacity: 3450mAh (Reference only)
- Nominal Voltage: 3.6V
- Discharging End Voltage: 2.5V
- Charging Current (Std.): 1475mA (other source 1675A)
- Charging Voltage: 4.20V (+-0.03V)
- Charging Time (Std.): 4.5 hours (other source 4 hours)
- Continuous Discharging Current (Max.): 10A
- Weight: less than 48.0g
- Dimensions: (D)18.50*(H)65.30mm
- Operating Temperature
Charge: 10~ +45°C
Dicharge: -20~ +60°C
- Storing Temperature: -20 ~ +50°C



source: http://www.keeppower.com.cn/products_detail.php?id=504

Don't know if it's Keeppower or Panasonic/Sanyo, but the first line in the specification chart lists capacity as 3300mAh. That's no different than the 18650B cells.

NoNotAgain said:

Don't know if it's Keeppower or Panasonic/Sanyo, but the first line in the specification chart lists capacity as 3300mAh. That's no different than the 18650B cells.

Click to expand...

Yep.

At some point, we start viewing Sanyo and Panasonic as just one brand, although I do believe they are produced in different factories with different R&D staffs.

Still...

Chris

Looks like a Panasonic NCR18650 cell in a Sanyo wrapper. Unprotected cell.

As far as whether it is developed by Sanyo, the discharge curve would say everything. Sanyo batteries have flatter discharge curves, while Panasonic cells have more downsloping curves.

I see a few vendors are advertising this as a 3500mAh battery, but that seems a bit optimistic, given the specs in the first post. Illumn.com has a protected version, selling for $14.

I believe this battery would compete against the LG INR18650-MJ1 and Samsung INR18650-35E

SubLGT said:

I see a few vendors are advertising this as a 3500mAh battery, but that seems a bit optimistic, given the specs in the first post. Illumn.com has a protected version, selling for $14.

I believe this battery would compete against the LG INR1860-MJ1 and Samsung INR18650-35E

Click to expand...

Keeppower IMR18650 - 3500mAh - 10A cont, 20 pulse?

I haven't seen a pulse rating for this battery.
There is some credible test data for this battery from an ebay vendor in Australia. I would post a link, but it would probably violate CPF rule #3,745,923.
But you can find it at this discussion:
http://budgetlightforum.com/node/39784

From what I can see Panasonic GA is holding much better voltage @ 8-10 amps - vs. LG Mj1 / continuous load

markr6 said:

Keeppower IMR18650 - 3500mAh - 10A cont, 20 pulse?

Click to expand...

What I expected. Illumn.com confirms this is the KP. I trust them unless someone finds another reliable source saying something else.

Let's be more realistic

orbtronic.com Orbtronic 18650 IMR 3500mAh

Max Discharge capability - Continuous Current Load: 10A (10000mA)


Max Discharge capability - Pulse Current: 18A (18000mA)

Looks like a great cell, but I don't see any button tops available yet

space-cowboy said:

From what I can see Panasonic GA is holding much better voltage @ 8-10 amps - vs. LG Mj1 / continuous load

Click to expand...

They almost seem to be made on the same assembly line?

I don't know, but the LG MJ1 has 95% the useable capacity at 10A continuous, that it has at .7A, so it loses only 5% going from .7A to 10A, which is pretty eye opening, at least according to this guy's testing of the MJ1. At 3.5A, it loses 1% of it's .7A capacity, which is just under 3500mAh for both cells tested--3481mAh and 3496mAh!

http://powercartel.com/2015/02/test-results-for-lg-inr18650-mj1-3500mah-18650-li-ion-battery/

Chris

markr6 said:

Looks like a great cell, but I don't see any button tops available yet

Click to expand...

Orbtronic have them all
Button top, Flat top, Protected, Unprotected

:thumbsup:

space-cowboy said:

Orbtronic have them all
Button top, Flat top, Protected, Unprotected

:thumbsup:

Click to expand...

I'm only seeing the flat top, unprotected. I'd like to get an unprotected with a button!

Oh I see it now...with the wrapper. I was looking for the red cell. Sneaky!

ChrisGarrett said:

They almost seem to be made on the same assembly line?

I don't know, but the LG MJ1 has 95% the useable capacity at 10A continuous, that it has at .7A, so it loses only 5% going from .7A to 10A, which is pretty eye opening, at least according to this guy's testing of the MJ1. At 3.5A, it loses 1% of it's .7A capacity, which is just under 3500mAh for both cells tested--3481mAh and 3496mAh!

http://powercartel.com/2015/02/test-results-for-lg-inr18650-mj1-3500mah-18650-li-ion-battery/

Chris

Click to expand...

Chris,

Once you see overlay you will understand.
LG is providing some (not very useable for us) additional mAh, below 3V line. When in high drain field what I am looking at is voltage curve.
GA after initial voltage sag (this is something new from Panasonic R&D) is bouncing back well over LG Voltage line.
Very good at 10A for this capacity level.

markr6 said:

I'm only seeing the flat top, unprotected. I'd like to get an unprotected with a button!

Oh I see it now...with the wrapper. I was looking for the red cell. Sneaky!

Click to expand...

There is no red cell with button top .. I thought that KP is black cell, or is it ?

space-cowboy said:

There is no red cell with button top .. I thought that KP is black cell, or is it ?

Click to expand...

Yeah IMR all black wrapper & black sticker now. I saw the naked red GA cell, flat top, but that's it. All over flavors have the Orbtronic wrapper.

markr6 said:

Yeah IMR all black wrapper & black sticker now. I saw the naked red GA cell, flat top, but that's it. All over flavors have the Orbtronic wrapper.

Click to expand...

As soon as spot welder hits that cell cannot be red, green, or pink anymore . Must be black. It is very tough industrial shrink wrap, much better than red.:thumbsup:

space-cowboy said:

As soon as spot welder hits that cell cannot be red, green, or pink anymore . Must be black. It is very tough industrial shrink wrap, much better than red.:thumbsup:

Click to expand...

It is good stuff. I started buying all Keeppower cells. Or if you're talking about Orbtronic, yes those are excellent as well!

I'm going to need 4x18650 for my M43vn when it comes in. These would be great, but I'll probably go with something like the LG HE4 or Keeppower around $7 or so.