3500mAh league: Sanyo NCR18650GA, Panasonic NCR18650GA, LG MJ1, Samsung INR18650-35E

[yoyotorpedo]

Anyone has already done a cycle life test on these batteries and compare it with 2.9ah batteries of same brands ?

[thunderheart]

Thanks quantumcloud509 !

[quantumcloud509]

That was a really nice review, thank you.

[headrc]

Ok thanks, I had watched that video previously and forgot about that. However, that is not the Swing cell by Boston Power. It is the Sonata. The Swing has a recommended fast charge of 10A whereas the Sonata fast charge recommendation is 8A. Sonata spec sheet http://www.boston-power.com.cn/attac...31714_9521.pdf Swing spec sheet http://liionbms.com/pdf/bostonpower/swing5300.pdf Of course I have not seen a test like what Jehu did on the Sonata for the Swing but it looks like Thunderheart has done some extensive testing on it.

[spinningmagnets]

Cell gets hot at 10A....Go to youtube

$3 eBay 4750mAh Boston Power Sonata Lithium Cells

and fast forward to 6:50...for some reason the link I added above doesn't work right.

[headrc]

Thanks Thunderheart. That is an excellent review on the Boston Power battery. Looks interesting to me. Where did you find they got hot at a 10 amp charge Spinningmagnets?

[spinningmagnets]

Here's a good video showing the interior guts of the Boston Power style of cell. It "looks like" two 18650 cells inside one metal case, but it is actually one large "oval wound" cell. Fast forward to 9:44

https://youtu.be/TNk0bouiPDQ?t=586

edit: removed faulty info I had posted about heat and charge rate, see below...

[thunderheart]

Do the differences indicated make a huge difference is real would use?

No. The results are too close to feel any difference IRL. Maybe after 300-400 cycles the difference would be not so little, who knows...

[Rider]

My first impression looking at the charts was that they are all good and not much difference between them. Do the differences indicated make a huge difference is real would use?

I’m a real world chart guy, but not in electronics. I’m a 100% financial/stock chart guy, with a good 40 years of staring at them...

[thunderheart]

Hi headrc! Yeah, i did test the Swing 5300. Here it is: https://endless-sphere.com/forums/vi...p?f=14&t=90938

[headrc]

I am a newbie here too. Nice test there! In the first picture you also have a picture of that Boston Power Swing 5300. Did you test that too? If so it would be nice to see the results on that too.

[thebootfitter]

Maybe slightly off topic, but wasn't sure it warranted a separate thread either. I've heard that a new cell is imminent with 3900 ah. Anyone here know anything?

[E-fire]

a detailed test, thanks

[thunderheart]

Hi guys! Thanks for warm welcome!
I'm going to publish a test/comparison of three high drain 20650 batteries soon. I think it's not as interesting as the 3500mAh battle, but nevertheless... Maybe it will be useful for someone:)

[JPLabs]

Way to make a great impact as a newbie here ! Thanks!!