12 volt battery

A lantern battery is a rectangular battery, typically an alkaline or zinc-carbon primary battery, used primarily in flashlights or lanterns. Lantern batteries are physically larger and consequently offer higher capacity than the more common torch batteries. Lantern batteries comprise multiple cells inside a housing.
The most common variant in the US is the 6-volt square-base battery with spring terminals. In Europe the most common one is the 4.5-volt flat pack.

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  1. J

    12 volt battery

    MG4 locked overnight, lights seen on in morning then went out. Had to open door manually. 12 volt battery flat, how could this happen?
  2. A

    12 volt battery

    The 12 volt yellow battery warning message displayed today and I had to switch off and on several times before the car would boot up as normal. Why does this happen ?
  3. A

    12 volt battery charging

    Having returned after 16 days on holiday I found the 12v battery to be too flat to be bothered to unlock my MG4 Trophy LR. (The HV battery was left at 60% plus before trip.) I couldn't trickle charge the 12v battery, seemingly because the current draw was too high. I disconnected the positive...
  4. T

    Unable to charge my SE

    I posted previously regarding the 12 volt battery not being charged resulting in me being stranded. The service centre charged it up and found no other problem however it has happened again, only this time it is worse.. I tried to put the car on charge but nothing happened, no blue lights on the...
  5. G

    12 Volt Battery

    MG 5 EV approx 19 months old. My 12 volt battery has packed up and when the MG garage checked the battery they said it was not an MG battery. I purchased the car from an MG dealer and the car had 800 miles on the clock and they are checking if they changed the battery but think it is unlikely...
  6. Sloucher

    12 volt battery charging.

    I've not received my ZS LR EV (and don't expect to for a loooong time yet, it was only ordered in April), but after reading all the 12v battery woes on here, I want to plan ahead. I currently keep a smart charger connected to my existing ICE car to keep the battery in good condition, can I...
  7. M

    12 volt battery

    I left my 70 plate MG ZS EV on the drive for 2 weeks and when I returned the car wouldnt open or start. Had to call MG assistance who quickly boosted the 12 volt battery and it then started. The AA man said MG supply a very small powered battery. Anyone else had this problem or has anyone a...
  8. Archev

    Dead car / flat 12 volt battery 😰

    Nipped out for a wee jaunt in the 5lr and immediately our nip was nipped in the bud. The car was dead, the key was doing nothing the doors were locked, the charge flap was locked - no entry. Used the manual key to pop the lock cover behind the door handle and unlocked the door. Nothing...
  9. S

    OVMS MG ZS EV 12 volt battery issue

    A few days ago I installed the OVMS module in my ZS EV. But every day the module shut down and is unavailable. After unplugging and reconnecting the ODBII connector it start working again. I assume when the 12 volt battery voltage is too low, it happens. Does someone have the same expierence...
  10. RossN

    12 volt battery problems

    I was charging yesterday at a rapid charger. It got to 94% and then realised I was going no higher. The charger had stopped and unlocked the lead. I thought nothing of it but the car would then not restart. Tried switching it on and off a few times then realised that the 12 Volt battery was...
  11. john w

    mg 5 12 volt battery

    what size is the negative battery terminal on the 12 volt battery on the mg5 ev i always thought they were13mm is this right?
  12. C

    New owner, USB and 12 volt battery query

    Hi, had my ZSEV about 2 months. Range disappointing but most else great i have tried 3 different USB music devices, each time get message about format being wrong. Cannot find anything helpful in handbook. All worked fine in previous Subaru and Nissan. also, poor range has lead to trying...
  13. J

    Dead 12 volt battery

    Hi. Has anyone else experienced to have a dead car because the 12 volt battery is suddenly very low? We didn't use the car for 5 days, and when it was time to use it again, we couldn't open the car. Luckily I have seen a video on how to enter the car with the secret key. But everything was dead...
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