Are BMSBattery's Generic 18650 Cells Any Good?

Batteries, Chargers, and Battery Management Systems.
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wpenner   10 mW

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Are BMSBattery's Generic 18650 Cells Any Good?

Post by wpenner » May 25 2018 10:36am

Has anyone had success with a generic cell battery from bmsbattery?

I really could use the savings, but if it only will last a year i guess the Panasonic cells are a better value. Using with 500watt motor.

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eee291   10 kW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by eee291 » May 25 2018 12:24pm

Why would you buy from China?

There are better places to buy cells from like Nkon.nl

or here viewtopic.php?f=31&t=61608

wpenner   10 mW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by wpenner » May 25 2018 1:45pm

I'm just trying to find the best value assembled 48v battery shipped to Canada. I'd like to try the budget one out, but not if it is going to be a complete piece of garbage that only lasts one year. I could not find any reviews of them using the search.

Wondering if $135 extra is worth the Panasonic cells
$189 extra to go with em3ev quality pack.
Last edited by wpenner on May 25 2018 1:55pm, edited 5 times in total.

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eee291   10 kW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by eee291 » May 25 2018 1:48pm

So you meant finished batteries.

This is a compelling reason to pay $150 more. https://em3ev.com/

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Sunder   100 MW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by Sunder » May 26 2018 9:47pm

I bought 100 cells from BMSBattery and protected it using one of their own BMSes.

One of the cells developed an internal short after just a few months, and took out the other cells in the string.

Admittedly, it could happen to any manufacturer, but given other quality and support issues I and others on this board have suffered, I'd recommend against risking it.
eBike: Q100H on 16S with Phaserunner FOC Controller
eMotorscooter: Vectrix VX-1 on 36S
eCar: Mitsubishi Outlander PHEV... Waiting for warranty to expire
eHouse: Still on grid, but with LTO batteries and 3kw LF inverter...

After 5 builds, the best advice I can give, is start with high quality products. I prefer http://www.ebikes.ca

wpenner   10 mW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by wpenner » May 30 2018 3:32pm

Thanks, I'm just going to go with em3ev then.

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fechter   100 GW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by fechter » May 30 2018 3:51pm

Sunder wrote:
May 26 2018 9:47pm
One of the cells developed an internal short after just a few months, and took out the other cells in the string.
Things like that can cause pack fires.
"One test is worth a thousand opinions"

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Sunder   100 MW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by Sunder » May 30 2018 6:30pm

fechter wrote:
May 30 2018 3:51pm
Sunder wrote:
May 26 2018 9:47pm
One of the cells developed an internal short after just a few months, and took out the other cells in the string.
Things like that can cause pack fires.
Admittedly these were LiFePo4 and they were in a farm shed, so the risk was low... But nobody wants to see this when looking at their battery:

Image
eBike: Q100H on 16S with Phaserunner FOC Controller
eMotorscooter: Vectrix VX-1 on 36S
eCar: Mitsubishi Outlander PHEV... Waiting for warranty to expire
eHouse: Still on grid, but with LTO batteries and 3kw LF inverter...

After 5 builds, the best advice I can give, is start with high quality products. I prefer http://www.ebikes.ca

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fechter   100 GW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by fechter » May 31 2018 8:13am

Such a sad sight. Makes you want to get out a pin.
"One test is worth a thousand opinions"

miro13car   1 MW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by miro13car » May 31 2018 8:20am

Sunder
what are those pouches??

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Sunder   100 MW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by Sunder » May 31 2018 9:32pm

5AH BMSBattery Generic LiFePo4
eBike: Q100H on 16S with Phaserunner FOC Controller
eMotorscooter: Vectrix VX-1 on 36S
eCar: Mitsubishi Outlander PHEV... Waiting for warranty to expire
eHouse: Still on grid, but with LTO batteries and 3kw LF inverter...

After 5 builds, the best advice I can give, is start with high quality products. I prefer http://www.ebikes.ca

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flippy   10 kW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by flippy » Jun 01 2018 1:55am

fechter wrote:
May 31 2018 8:13am
Such a sad sight. Makes you want to get out a pin.
makes me not wanting to deal with pouches ever.

i refuse to work with them from a company perspective. too dangerous and unreliable. i like my workshop in a unburned state.
when i recieve pounch based batteries for repair or rebuilding i keep the pouches in storage outside the building until i can replace the insides with 18650's and the recyling company comes to pick up the pouches. they are only inside the building during dissassembly of the battery. there is always someone present when a pouch is on the workbench.
Lithium beats liquid dinosaurs.

miro13car   1 MW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by miro13car » Jun 01 2018 8:15am

flippy
you like others make a mistake of throwing all category in one bag.
Nissan Leaf uses pouches /not LiFePo/ but pouches
Chevy Volt uses pouches /not LiFePo/ but pouches
etc.
one of the best LiFePo chemistry 20Ah cell, high C cells are A123 pouches.

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flippy   10 kW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by flippy » Jun 01 2018 9:26am

I am not talking about high end stuff from car makers with crash proof compression housings but the chinese crap you find in drones, ebikes and other non industrial sources.
Lithium beats liquid dinosaurs.

miro13car   1 MW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by miro13car » Jun 01 2018 11:25am

pouches are not all the same.
so say - China brand pouches

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flippy   10 kW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by flippy » Jun 01 2018 3:13pm

miro13car wrote:
Jun 01 2018 11:25am
pouches are not all the same.
so say - China brand pouches
no, because a high end cell like a chevy or leaf pouch outside it's compression housing is just as dangerous. the housing is what keeps the thing from puffing and puncturing. put a piece of shrink wrap around a naked leaf cell like hobby king does and i aint letting them into my shop unsupervised.
Lithium beats liquid dinosaurs.

JuergenH   1 mW

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Re: Are BMSBattery's Generic 18650 Cells Any Good?

Post by JuergenH » Jun 29 2018 3:22am

Sunder wrote:
May 30 2018 6:30pm
fechter wrote:
May 30 2018 3:51pm
Sunder wrote:
May 26 2018 9:47pm
One of the cells developed an internal short after just a few months, and took out the other cells in the string.
Things like that can cause pack fires.
Admittedly these were LiFePo4 and they were in a farm shed, so the risk was low... But nobody wants to see this when looking at their battery:

Image
This cells should be inventories, storage for too long and the battery life decay,so will soon be damaged. :shock: :shock: :shock:

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