Ezee battery fire & recall

Batteries, Chargers, and Battery Management Systems.
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Hillhater   100 GW

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Ezee battery fire & recall

Post by Hillhater » Apr 28 2019 5:20am

Recent house destroying Ebike battery fire in Sydney and a recall on defective Ezee batteries
https://www.smh.com.au/business/consume ... .html?btis
Apparently Ezee are blaming the LG cells for a defect ?
This forum owes its existence to Justin of ebikes.ca

district9prawn   100 W

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Re: Ezee battery fire & recall

Post by district9prawn » Apr 30 2019 3:46am

Hillhater wrote:
Apr 28 2019 5:20am
Apparently Ezee are blaming the LG cells for a defect ?
And looks like LG deny everything. I don't recall reading that in article on the day it was published. I only noticed it today?
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Matador   10 kW

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Re: Ezee battery fire & recall

Post by Matador » May 28 2019 4:56pm

Faulty BMS also likely ... To allow overcharging a cell group to a point of unstability. I'm thinking, at leas 4.4V...

billvon   1 GW

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Re: Ezee battery fire & recall

Post by billvon » May 28 2019 4:58pm

Matador wrote:
May 28 2019 4:56pm
Faulty BMS also likely ... To allow overcharging a cell group to a point of unstability. I'm thinking, at leas 4.4V...
Or a puncture. Or an internal short. A little early to be deciding it's overcharge.
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Hillhater   100 GW

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Re: Ezee battery fire & recall

Post by Hillhater » May 28 2019 6:23pm

I assume Ezee did do some basic inspection and checks to eliminate obvious faults before they issued a recall , let alone finger a reputable cell manufacturer like LG.
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Matador   10 kW

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Re: Ezee battery fire & recall

Post by Matador » May 28 2019 8:41pm

billvon wrote:
May 28 2019 4:58pm
Matador wrote:
May 28 2019 4:56pm
Faulty BMS also likely ... To allow overcharging a cell group to a point of unstability. I'm thinking, at leas 4.4V...
Or a puncture. Or an internal short. A little early to be deciding it's overcharge.
Internal short also good possibility. But puncture ? The battery was left charging ovenight, left unattended. So puncture not impossible but seems unlikely.

Maador

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neptronix   100 GW

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Re: Ezee battery fire & recall

Post by neptronix » May 28 2019 9:20pm

I love how she just put a new battery on the bike and kept riding...

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