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Home > Technical (L405) > I’m now a Battery Drain Monitoring Trainee nerd—lol! ;-)

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Gremlin500

Member Since: 11 Mar 2022
Location: Newcastle, UK
Posts: 1421

I’m now a Battery Drain Monitoring Trainee nerd—lol! ;-)

@Kot: Sorry, I just couldn’t resist!

Following on from my recent post in the “What Battery Charger” thread, I thought I’d better start a new post to tell peeps about my new “must have” FFRR gadget

As I explained in the other thread, I’ve always been paranoid about “quiescent drain” (which is a bit like paranoia, -you don’t know you have it until too late! ).

So, I bought one of THESE, (after good experience with the “Kot Kit” using the Vgate OBDII dongle in Kots’ other (Title totally plagiarised) “Regeneration Trainee Nerd” thread ):-

Click image to enlarge

It’s a little onboard BT module to monitor the battery when the car is all locked up and “asleep”, something that’s not so easy to do otherwise.

Initial play and readings as below, first with CTEK connected, engine start, kill ignition.
Second pic, engine off, CTEK charging slowly:

Click image to enlarge

Then, unplugged the CTEK for a day, and the readings:

Click image to enlarge

So, that’s a drop of 0.03V in 9h, and a drop of 0.05V in another 12h, total of 0.08V in 21h, = 0.09V/24h, or 0.63V per week, -nothing to worry about!

I haven’t played with it’s other abilities, cranking test, etc. yet, but here is a pic of the Settings screen:

Click image to enlarge

So far, a very useful addition to the “Nerd” series of essential monitoring gadgets.

Fitting pics are in the “What Battery Charger” thread……….

“If it ain’t broke, don’t fix it” -where’s the fun in that?

5th Feb 2024 3:37pm

luxmoggy

Member Since: 19 Jun 2020
Location: Trier
Posts: 461

2019 Range Rover Autobiography SDV8 Montalcino Red

I have 2 of these connected to the 2 batteries. The values under the bonnet are lower than the battery and doesn’t take into account the 2nd battery.

Click image to enlarge

With the software I can see the values from the 3 monitors. It automatically records cranking voltage.

Click image to enlarge

I can check on the batteries from my kitchen. If I connect the charger I can monitor that from inside too. SDV8 AB MY 2020
MINI Cooper S Cabrio
Kit: Jaguar XK140 (in progress - the website is link to build)

5th Feb 2024 6:48pm

Kot

Member Since: 10 Mar 2021
Location: broadland
Posts: 1195

Well done boys I must join the club

@luxmoggy what is the name of the app? 2018 SE SDV8 4.4 Byron Blue

Last edited by Kot on 5th Feb 2024 9:07pm. Edited 1 time in total

5th Feb 2024 7:32pm

luxmoggy

Member Since: 19 Jun 2020
Location: Trier
Posts: 461

Here it is:

Click image to enlarge

SDV8 AB MY 2020
MINI Cooper S Cabrio
Kit: Jaguar XK140 (in progress - the website is link to build)

5th Feb 2024 7:36pm

Kot

Member Since: 10 Mar 2021
Location: broadland
Posts: 1195

So Aliexpress it was then yes all the battery monitors are made in China and cheaper than Amazon and eBay.

i went for https://www.aliexpress.com/item/1005005850126853.html bought 3! not bad for £40 including VAT and delivery.

1st for Main battery, 2nd for Start /stop/aux and 3rd for daughters Freelander 2

So waiting for the slow boat from China then will report back to the battery nerd group 2018 SE SDV8 4.4 Byron Blue

5th Feb 2024 8:11pm

Gremlin500

Member Since: 11 Mar 2022
Location: Newcastle, UK
Posts: 1421

Vgate have their own free App, just scan the QR code in the picture above!

I went for Vgate Official Store on AE, unbelievably there are er, Chinese copies of Vgate products!

P.S. I have only one battery! “If it ain’t broke, don’t fix it” -where’s the fun in that?

5th Feb 2024 8:17pm

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