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. D

    12V battery low warning light HS PHEV

    I have a 17 month old MG HS PHEV which recently started showing a warning light after turning the engine off. 12V BATTERY LOW AVOID PARKING FOR 3 DAYS. I have taken it to two different dealers in Norfolk, UK and had diagnostics run but they don’t know why it is happening. On the first visit...
  2. Pebble

    12v battery - options?

    Not that I'm looking to change my 12v battery for a while but reading many posts on here, made me think a bit. Coming from the marine and leisure (motorhomes and caravans) industries, we use "starter" batteries and leisure/domestic batteries. Both have different characteristics in how they...
  3. 1

    Fast charging 12v battery through home 7kW. Possible?

    I had to charge my ICE 12v car battery yesterday. This entailed the use of a long extension lead for my garage to the front of the house, about 20 metres. Although I am still awaiting for a ZS delivery, I do already have the 7kw home charger installed in the front porch. Is there an adapter...
    • 1MGEVUSER
    • Thread
    • 12 volt battery battery charging fast charging mg zs ev
    • Replies: 26
    • Forum: MG ZS EV Forum
  4. Peter WA

    ZS EV Mk2 12V battery auto-top-up?

    When researching the differences between Mk1 and Mk2 I came across the information that the Mk2 can top up the 12V battery from the HV battery when the car is stationary for a while and voltage of the 12V battery drops. Has anyone actually observed this happening? Is it is triggered by a...
  5. G

    System Fault 12V battery low and car doesn't start

    Hi there, New to the forums (just joined)! My dad's 72 reg MG5 pre facelift no longer turns on and I suspect that he left the heating on for too long whilst on the 12V battery. He had put the car to charge at the supermarket and all I know is that the car was at roughly 40 percent (don't know...
  6. wandle MG4 trophy

    Charging 12v battery using a V2L lead connected to the same car?

    There are a few threads on here about MG4 12v battery failures that have caused numerous issues. I park my car well away from any plug that I could use for a battery charger so I am wondering if I could use my V2L cable connected to my car to attach a battery charger to charge my 12v battery...
  7. HoriUK

    MG5 12v Battery Replacement Cost?

    Evening all. Looks like this cold weather has done for our 12v battery - after a week of the infotainment playing up, today the car was totally dead. Our neighbour kindly (especially as the AA aren't responding to homestarts today) gave us a jump, and when it came back to life I think it went...
  8. C

    Discharged 12V battery

    Hi All, interesting thread on ZapMap cafe yesterday that started with a photo of two guys apparently trying to jump start an eNiro from an ICE 12V battery. General incredulity all round until someone pointed out that they'd almost flattened the 12V battery of their Niro by leaving the heating on...
  9. H

    How long have your 12V batteries been lasting before they need replacing?

    We have been happily running our MG ZS EV for just over 2 years since new without any issues, but over the last week we have found it completely dead three times, requiring manual key entry and jump-starting to wake it up. I am wondering whether the 12V battery has simply reached the end of its...
  10. N2STY

    12v battery charging when driving ZS Gen 2 only

    Been look at gen2/mk2/facelift posts and it looks like people that got the car a bit earlier it charges at 14.1 when ready/driving but my Sept car is charging at 13.8 I did wounder if this is one of the updates? If you get the 14.1v does the unlock car release the charge cable and restart if you...
    • N2STY
    • Thread
    • 12 volt battery battery battery charging charging driving gen 2 mg zs ev
    • Replies: 25
    • Forum: MG ZS EV Forum
  11. 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...
  12. MarkLynn

    12v Battery

    I have a SR just over 12 months old and last couple of days 12 volt battery is showing 13 volts then climbing to 14.1 over 15 to 30 seconds after turning on twice it has shut the HV battery and had to restart, do you think the 12volt battery could be degrading
  13. 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...
    • Sloucher
    • Thread
    • 12 volt battery battery battery charging charging mg zs ev
    • Replies: 16
    • Forum: MG ZS EV Forum
  14. W

    Typical 12v battery level?

    I’ve had my mg5 LR for about two months, and I’m sat in it waiting to AA assist, as it’s broken down with a system fault, hv battery shut off fault. It seemed to be caused by a dodgy GeniePoint charger at Morrisons, which caused my 12v to go from 14.1 to 12.1. This got me wondering, as I’m new...
    • welshlewy
    • Thread
    • 12 volt battery battery battery level mg5
    • Replies: 19
    • Forum: MG5 EV Forum
  15. I

    V2L warning - also discharges 12v battery!

    So first time using our new V2L cable on the campsite last night and awoke to a flat 12v battery. It seems that with the V2L cable attached there is some form of drain on the 12v battery although I cannot work out what or why?! The process we followed was: car on, discharge screen set to 40%...
  16. thingaby

    Replacing the 12v battery and warranty limitations - what would you do?

    During the breakdown in which my car was bricked by fault codes triggered by the Eurotunnel rapid charger my car 12v battery 'failed' and dropped to 3v charge. The car was recovered to the local dealer where (after 2 days) the fault codes were cleared, the 12v battery re-charged and a...
  17. D

    12V Battery charge low - do not park for more than 3 days.

    Just picked up my LR ZS and get the above message when I switch the car to ready and again when switch off. When the car is in ready it says the voltage is 14,6V Any ideas out there
  18. Alb

    Battery Disconnectors

    This came up in my feed this morning. I've followed Clive for some time and his articles are usually interesting.
  19. N2STY

    Bad 12v battery information

    Which statement is Right both from the same manual page 9 and 290
  20. 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...
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