battery drain

Nickel oxyhydroxide battery (abbr. NiOx, IEC code: Z) is a type of primary cell. It is not rechargeable and must be disposed after a single use. NiOx batteries can be used in high-drain applications such as digital cameras.
NiOx batteries used in low-drain applications, have a lifespan similar to an alkaline battery. NiOx batteries produce a higher voltage (1.7V) than alkaline batteries (1.5V) which can cause problems in certain products, such as equipment with incandescent light bulbs (such as flashlights/torches), or devices without a voltage regulator.

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  1. asti1488

    Merry Xmas MGS5

    Hi recent member here , MGA5 on order expected late dec early Jan Beginning to read lots of electronic issues with this model, parasitic battery drains, boot not opening , car not opening, car not closing Car not charging , dealer issues, etc etc As it’s Xmas and I’m thinking have I made a big...
    • asti1488
    • Thread
    • battery drain boot charging dealer electronic issue mg5 ownership experience
    • Replies: 21
    • Forum: MG MGS5 EV Forum
  2. S

    MGS5 12V battery dead

    Has anyone else had a problem with the 12V battery becoming drained overnight? I returned my first MGS5 due to this problem and today I have had exactly the same problem with my replacement MGS5, arghhhhh.
  3. A

    Surprising behaviour

    Today we went to visit friends at 2pm and I must have forgotten to lock the car. When we came out just before six the car was still on - and because it had become dark all the lights were on. It doesn't seem to have caused a problem with the 12V battery, but I'm surprised that it didn't time out...
    • Amun
    • Thread
    • battery drain car lights driver seat sensor mgs5 vehicle shutdown
    • Replies: 5
    • Forum: MG MGS5 EV Forum
  4. Pwt307

    Replacement Car

    After almost exactly 8weeks of going into and out of dealership, old car brand new, picked up 18/9 hybrid + trophy Hampstead grey has been exchanged/replaced by Hybrid + black pearl below. It’s been a journey, and really hope I made right decision to replace rather than reject. To be fair...
    • Pwt307
    • Thread
    • battery drain dealership flat battery infotainment system mg hs hybrid+ usb disk
    • Replies: 3
    • Forum: MG HS Hybrid+ Forum
  5. I

    Help!

    Hello all, Walked out to my 2024 MG ZS EV after 2 weeks not driving, pressed the key fob...nothing. Thought it might be dead, changed the fob battery, still nothing. Used the emergency key to get in, tried to start, dead as... Waiting for RAC to give me an arrival time but, in the meantime...
    • Ian 2455
    • Thread
    • battery drain breakdown key fob mg zs ev rac assistance
    • Replies: 9
    • Forum: MG ZS EV Forum
  6. bilbo

    USB Recognition Failed

    Has anyone else had this error with the S5? It's not related to anything plugged into the USB sockets, but rather a problem with the DAB radio. See below from the MG4 forum: I've had this twice now, i.e. get the message, then radio freezes. After the first time I did the dis/re connect -ve...
    • bilbo
    • Thread
    • battery drain dab radio mgs5 nation radio south radio freeze software update south hampshire dab usb error
    • Replies: 5
    • Forum: MG MGS5 EV Forum
  7. B

    Parasitic drain on 12V battery

    Hi, I bought a brand new MGS5 Trophy 61kWh on 8th Aug 25, on the15th Sept 25 (a month later) the 12V battery was depleted. I don't use the car with just the 12V battery running, I make sure the car is in the ready mode. The AA said I have a parasitic drain on the 12V battery. MG had the car 6...
    • Big L
    • Thread
    • battery drain electrical fault mgs5 parasitic drain trophy 61kw
    • Replies: 86
    • Forum: MG MGS5 EV Forum
  8. Rolfe

    Will Caliban start on Monday morning?

    Will Caliban start on Monday morning? Place your bets. So here I am in a hotel car park and my friend went in to sort everything out. She paid for five nights in advance (she got a good discount) but we can't take the car out during that time. I'm on 20% battery and concerned that the 12v won't...
    • Rolfe
    • Thread
    • battery drain charging hotel parking jump starter mg4
    • Replies: 126
    • Forum: MG4 EV Forum
  9. T

    USB Power

    I purchased Ottocast wireless adapter cp82 u2-air pro carplay for my Mg EHS 2021. The device drained the car battery since the usb port stays on. Any suggestions?
  10. S

    Mg5 long-range 12V not charging

    Hi all.. I do 1 HR journeys daily and also plug in overnight The below image is from 7am after an overnight charge....no schedule restrictions so has been plugged in constantly...50% charge Isn't the 12V meant to charge as well.. I'm sick of panicking every morning that the battery won't be...
    • splreece78
    • Thread
    • battery drain charging issue long range mg5 rac
    • Replies: 6
    • Forum: MG5 EV Forum
  11. S

    Deep sleep

    Hi guys. I have had the car when new in 2022 and had always thought that it's my spot where the coverage is poor hence I was not able to get the app to connect to the car often... I then discovered that app connection is still very hit and miss wherever I go and I am starting to dig deeper...
    • SKA
    • Thread
    • battery drain connectivity deep sleep mg zs ev remote app telematics
    • Replies: 1
    • Forum: MG ZS EV Forum
  12. M

    MG HS Hybrid battery drain

    Hi I took delivery of a new MG HS Hybrid on 27/6/2025. I have had to call MG assist 4 times due to flat battery. The car is going back to the dealer, but have requested a replacement vehicle. Has anyone else experienced this problem?
  13. Seajays

    Had the Dreaded 12V Battery Drain Overnight

    So having never had an issue in the last year, and regularly checking the 12V battery every few months with a top up charger, I was happy that the 12V battery was good. Unfortunately on Saturday I went out on the dual-carriageway and it was raining, but not dark enough for the auto lights to...
    • Seajays
    • Thread
    • battery battery drain drain mg4 overnight
    • Replies: 50
    • Forum: MG4 EV Forum
  14. M

    Car battery drain and car dead after 3 months

    Bought new MG4 XPower in october, in december the battery was dead i could not even get in the car, garage gave me a 'story' it was software and updated it. Now three months on it has happened again. Spoke to a guy who worked at MG and this is a known issue with a cable to the radio that drains...
    • masty
    • Thread
    • battery battery drain car battery drain mg4 mg4 xpower
    • Replies: 12
    • Forum: MG4 EV XPOWER Forum
  15. Z

    Alarm triggering

    I have a problem after starting the car, the key error is written on the screen and when I stop, the alarm goes off.If I change the battery in the key, it doesn't do it for 14 days. I have a problem that the battery in the handle has only 2.8V after 14 days.Why does the battery in the key drain...
    • Zdenek
    • Thread
    • alarm battery drain car issue electrical problem key mg4
    • Replies: 4
    • Forum: MG4 EV Forum
  16. W

    Shocking battery drain when not used....

    Well it didn't, not even 1%. We were moving house and living in out of the motorhome for a month so the MG was left at a friend's house. Parked up with 51% on 11th June, picked up today and still had 51%. Should I write to the Daily Mail to tell them? :ROFLMAO:
  17. J

    Battery Drain

    Hi I have installed a dash cam with front and rear cameras, my question to you other MG users, do you disconnect yours at night or is it better to leave it running, I am worried it will drain the battery, it says on the box that it is 5volt and 1.5amp
  18. B

    Car switched on while parked ?

    In the bad old days of ICEs and their ignition systems, I was advised not to leave the ignition switched on with the engine off, for fear of damaging the coil. On older cars there wasn't even an Aux position on the ignition switch, so if you wanted to listen to the radio while waiting for your...
    • Barney
    • Thread
    • battery drain coil ignition mg5
    • Replies: 4
    • Forum: MG5 EV Forum
  19. A

    How quickly does that battery drain?

    Hello everyone, I'm brand new to EV and I have had my Trophy LR for 3 weeks. I know it's winter and I have heat on etc but my battery is going down 10 to 12% for about a 12 mile trip to do school run and to work. Is this normal? Thanks in anticipation
  20. boomish

    Dash cam battery drain with 24hr parking monitor ?

    Is anyone using a dash cam that has 24hr parking monitor Successfully? I’ve bought a new Jansite 4k Mirror dashcam & hardware fitting kit, but after reading all the threads on dashcam fitting & ordered ATS fuse taps, I then started reading the fitting kit has a battery cut off voltage to not...
    • boomish
    • Thread
    • battery battery drain dash cam mg5 parking
    • Replies: 4
    • Forum: MG5 EV Forum
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