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. sgt4hed

    12V Battery Upgrade

    I have started this thread because I have seen so many comments about how crappy the 12V battery is so I am looking into viable upgrades ranging from bigger lead acid batteries to Li-Fe or Li-Ion to save a bit of weight in the process. We can also use this thread to discuss options on how to...
  2. C

    12v battery replacement MG5

    Hi, I haven't got my MG5 yet. RRG Stockport MG dealer still have it who say they have had issues with the 12v battery. It's taken 7 days so far, they're hoping another week for it to arrive. Is this normal for MG parts? And surely we're not tied to an MG branded 12v battery? Anyone had any...
  3. 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...
  4. Aussi55

    Observations on 12v Battery SOC

    Hi all, I recently fitted my Bluetooth BM2 battery monitor to the ZS EV just to get an idea of what the SOC was over time as I am currently not using the car every day. It had been sitting for a few days when I fitted it and I was surprised it was low at 47%. The car is just over a year old...
  5. 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...
  6. keithw64

    The 12v battery!

    Hi all. Had my MG5 EV now for a couple of weeks and loving the relaxing driving experience it delivers...once I had turned off the lane assist self steering which was alarming! Only just got around to lifting the bonnet yesterday as clearly not much to see or do under there and a friend was...
  7. TiMoleseyEV

    Charge 12v battery using 12v charger?

    Hi I have an unusual issue I think. My ZS EV was in a garage for repair for over a week. During this time the 12V battery became critical - I have OVMS so was notified. When collecting it I recharged the HV battery overnight but this has not charged the 12V battery. OVMS has stopped polling...
  8. 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...
  9. 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...
    • RossN
    • Thread
    • 12 volt battery battery mg5
    • Replies: 7
    • Forum: MG5 EV Forum
  10. Cocijo

    Does HV battery charging charge up a flat 12v battery?

    I wondered. If your 12v battery is flat does connecting to a HV charger charge it up or does the 12v need to be charged up first before the HV charger will work?
    • Cocijo
    • Thread
    • 12 volt battery battery battery charging charging mg zs ev
    • Replies: 10
    • Forum: MG ZS EV Forum
  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. BillyWhizz

    If your 12v battery is flat

    Just watched a video by James may about his Tesla and the problems he had even getting into the car when the 12v battery went flat so I was wondering if this happened on a MG5 how to open the doors and the bonnet to get to the battery there is a key blade on the key fob anyone know how to use it ?
  14. D

    Does 12V battery charge whilst charging HV battery?

    I recently tried my first public charge at a PodPoint charger and that worked fine (especially as it was free!). However when I set off I noticed the 12V battery voltage was down to 12.2V. I had been listening to the radio with air-con turned off. I tested this at home the next day, charging...
    • deej19
    • Thread
    • 12 volt battery battery charging mg5
    • Replies: 4
    • Forum: MG5 EV Forum
  15. chowbenter

    12V battery disconnect!

    Well I had to disconnect the 12V battery terminal for the first time yesterday, My own fault with two left feet :rolleyes: I pressed the start button but brain wasn't in gear & after a few turn on-offs whilst pressing pedal not pressing the pedal numerous times it wouldn't move:eek: I've always...
  16. Peter WA

    12V Battery - Charge Voltage

    Since I've got my OVMS up and running I get an overview of the voltage of the 12V battery over time. When the car is parked the voltage slowly drops, perhaps a little faster due to the OVMS itself and even faster since I've got a SIM installed and 3G is active. The 12V battery appears to get...
  17. R

    12v battery MG ZS EV. I understand that vehicle is fitted with a 12v "auxilary battery" Correct?? If so what is its function?

    I understand the MG ZS EV is fitted with a 12v "auxilary battery " Correct?? If so what is its function?
  18. S

    12v battery low, charge from 12v socket inside the car possible?

    I was searching for a portable jump starter battery pack in case I ever find myself with a dead 12v battery. Then in occurred to me that I don't need the power to turn a starter motor, just enough to run the electronics. It'll be even more convenient if you can do it from the 12v socket. Does...
  19. J

    12v battery trickle charge message

    For about 2 weeks I have had a message appear on my dash board with an image of the 12v battery asking for me to place it on a trickle charger. It mainly appears when i'm coming to or I have come to a stop. I did place the 12v battery (under the bonnet to stop any confusion) on a trickle charger...
  20. drjas

    Dead (12V battery) on arrival! less than auspicious start

    My wife and I picked up our brand new MG ZS EV from the dealer last Wednesday (24th) lunch - oh happy day! A few afternoon errands, then my wife was driving out to a post-COVID dinner gathering when the computer spat the dummy, shouted a range of alarms and then shut down the car. She was...
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