Astrolux EC01 drains 80mA while off, killing the battery

11 posts / 0 new
Last post
stroodl
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/30/2019 - 07:04
Posts: 12
Location: Czech Republic
Astrolux EC01 drains 80mA while off, killing the battery

Hello to all,

my EC01 kept discharging the battery (Molicel P42A) down to 0.3V even if I did not touch the flashlight for a couple of days. I blamed the cell and was about to buy a new one.

Today I found out that the flashlight drains 60-90 mA from the battery while its off with the button backlight being off as well. I tried my father’s EC01 with the same cell and it drains less than 1mA so it an issue with the flashlight.
The flashlight is useless now because it won’t let me charge the cell if it is so deeply discharged, damaging the cell as well.

Does any of have an idea how to repair the flashlight? I bought 5 of them for my family and this is the only one with such an issue.

Thank you very much, Ondrej

PXL-20210221-185337270

zoulas
zoulas's picture
Online
Last seen: 11 min 16 sec ago
Joined: 06/01/2020 - 08:35
Posts: 965

There have been some lights not necessarily this one where the led stays on super low thus draining the battery. Can you check if the led is on in the dark? Even a little. I think you will have to look very carefully.

If that is not the case, it may be the switch.

Can’t really tell you how to fix it.

It may also be a faulty battery.

stroodl
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/30/2019 - 07:04
Posts: 12
Location: Czech Republic

Thank you.

The LED is 100% totally off.

I’ve tried two other cells with the same result. I will try to take the flashlight apart – 90mA is quite a lot, something has to heat up inside..

Yokiamy
Yokiamy's picture
Offline
Last seen: 4 hours 14 sec ago
Joined: 10/18/2016 - 15:47
Posts: 2903
Location: Netherlands

I have experienced the same problem with my FT03, i replaced the driver (I ordered another driver from AE after contacting mateminco)
The FT02 is known for this issue as well.

stroodl
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/30/2019 - 07:04
Posts: 12
Location: Czech Republic

So I took it apart but I cannot locate a part that heats up. Something is still consuming 100mA, even with the main LED disconnected. Will give it a rinse in isopropyl tomorrow to see if it helps.

NeutralFan
NeutralFan's picture
Offline
Last seen: 3 hours 5 min ago
Joined: 03/20/2014 - 19:22
Posts: 1306
Location: Wisconsin, USA

Curious if you have measured the current with the lighted switch on?

I’d rather use my flashlight around the house than turn on the lights.

wle
wle's picture
Offline
Last seen: 33 min 6 sec ago
Joined: 01/07/2015 - 13:49
Posts: 2187
Location: atlanta ga

80 ma would be very visible if it were going through the LED
that is a LOT of ‘off current’
something is wrong with the driver

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
       ,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø¸,ø¤º°`°º¤ø¸

Scallywag
Scallywag's picture
Offline
Last seen: 2 hours 17 min ago
Joined: 01/11/2018 - 22:23
Posts: 1895
Location: Ohio, United States

Yeah I’m wondering where it’s going. Some sort of very high resistance bridge to ground, like stray flux residue or something? I have really no idea – but was going to suggest cleaning the driver also.

Shame. They’re using Attiny85s with NarsilM or anduril on all those lights, which are typically great setups for minimal standby drain. Something definitely wrong with it.

If all else fails you’ll need a new driver.

stroodl
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/30/2019 - 07:04
Posts: 12
Location: Czech Republic

The isopropyl bath did not help Sad

Yes, I tried to measure the current with the light switched on, don’t remember the value but the multimeter works if it is what you’re asking Smile

Don’t know what to try now. How about supplying more volts so that more current passes and some part (hopefully) heats up? How much can it handle? 4.5V? or more?

zoulas
zoulas's picture
Online
Last seen: 11 min 16 sec ago
Joined: 06/01/2020 - 08:35
Posts: 965

Isopropyl is rarely a solution to what is most likely an electrical problem. You can try taking it apart and putting it back together. Other that, you can consider getting a new one and leaving that one for parts.
Since you bought multiple units, spare parts can only be viewed as an asset.

stroodl
Offline
Last seen: 2 months 2 weeks ago
Joined: 08/30/2019 - 07:04
Posts: 12
Location: Czech Republic

The idea was that some water might got inside and form a bridge or something on the driver. Of course I rinsed the driver itself, not the whole flashlight.

I will have to buy a new driver somewhere :/