batteries

  1. P

    Solar Panels Do solar charge controllers regulate voltage to batteries?

    This is probably the most stupid question ever..... I have ''inherited'' some PV panels from the previous owner of a property... There are 7 PV panels wired in parallel, actually 8 but one is broken... Wired through a rather basic charge controller, to charge a 12 volt car battery. The systems...
  2. B

    Adding batteries to existing solar panel installation

    I am working with an licensed electrician but might need to find one with more experience. I understand electronics extremely well but again, am using a licensed electrician. Our house has 10 solar panels. A small inverter is mounted beneath each panel. All ten inverters are wired together...
  3. hey-hey-my-my

    About Victron chargers and AGM batteries

    Hi all, I've just purchased a Victron 7 stage 30A charger : Victron Blue Smart IP22 Bluetooth Battery Charger - 12V 30A, 3 outputs - https://www.12voltplanet.co.uk/victron-blue-power-ip22-7-stage-adaptive-battery-charger-12v-30a-3-output-uk-plug.html This coupled with a 400W solar array should...
  4. S

    House has PV & batteries - how much to add extra battery?

    Hello. Sis has just looked at a house with a possible view to purchase. It has just had 30 PV panels fitted along with one battery, and this is used to run the fully electric CH 'wet' system. (This has only been installed for 1 month, so owners have little idea of how effective it is going to...
  5. S

    Mobile Barista at wits end!

    All I want to do is sell coffee!!! ... yet I have found myself stressing about power supply! I have a mobile coffee van. I'm done with using generators and so are many event/festival organisers who are now banning petrol/diesel from their sites. In an ideal world I would like a battery fed...
  6. Charlie_

    AA Lithium Batteries 3.6v

    Do any of the main national wholesalers sell 3.6v batteries over the counter? I need 2 for a job asap, can order them online tonight but hoping I can pick some up in the morning.
  7. Pete999

    For Sale ACT Battery tester 12Volt SLA and Car Batteries from 1.2 AH -200AH

    As title complete with soft case and instructions PM me if interested £150:00. Pete
  8. S

    Batteries: Where do you get yours?

    This looks like a good deal, unless anyone knows better :) Duracell Industrial Alkaline AA 1.5v Battery - Pack of 50 - http://tinyurl.com/y8hkaswe
  9. S

    Best place for batteries?!

    Hi everyone, With the security industry becoming more and more wireless, can anyone recommend the best place to get CR123A batteries from? Think I’m overpaying at the minute, would happily buy a shed load in bulk! Thanks
  10. O

    VW Transporters (mainly 2017) and mainly MOLL batteries

    Mine is in dock waiting for VW to conjure up a new battery - they say this is an isolated event ............ but various sources on the internet suggest otherwise. If you have one of these vans - make sure you are carrying your jump leads Not having the van for 3 days has cause me havoc with...
  11. Gavin John Hyde

    Thoughts on compatible power tool batteries?

    Just been looking at some cordless SDS drills, need one for a job with no power on site.opted for the DCH253 SDS+, only £128 for the drill on its own. so get to the batteries. The Dewalt branded 18v 4.0Ah battery is around £48.00, the 5.0Ah Dewalt battery is £68.00 Looking online(amazon) you can...
  12. M

    Recharegeable batteries with iBoost

    According to the manufacturer Marlec, recharegable batteries are not recommended with an iBoost sender. Can anyone explain why please? My non rechargeables are now flat and the only spares I have currently are rechargeable batteries. Are they ok to use temporarily?
  13. N

    Fuse between batteries

    Hi all I’m in the process of upgrading my solar set up to 2x 260w panels with a 40a mppt tracer I’ve just bought a 2000w(4000w peak) inverter which will be running off my 2 120ah leisure batteries connected in parallel using 70mm2 cable fused at 350a But my question should the fuse between the...
  14. Rom

    Replacing UPS batteries produce a spark

    I'm having some problems with my PC's uninterpretable power supply. It came with two 12v 9Ah batteries that aren't charging anymore so I've decided to replace them with higher capacity batteries that are 12v 12Ah. The old batteries were connected in serial (plus to minus) but if I try to connect...
  15. R

    Campervan Leisure Batteries retrofit installation questions

    Hi there, I have a setup at the moment involving a leisure battery/inverter. I am replacing the single battery with 3 batteries. What I'm wondering is will this mess up my previous calculations re wire/fuse sizes? I'm very confused by the information I've read online. And to connect the two...
  16. F

    Power for mobile catering - batteries versus generator?

    Hi all, I'm new here and have a pretty specific question. We've got a vintage ambulance we've converted to a coffee bar. There's a mains voltage hookup to a 3 way consumer unit which runs everything including a 12v charger which charges 2 x 110Ah batteries. Now, we're looking at a pitch where...
  17. ellie

    running a house from car batteries for the electrical idiot

    i live in the middle of nowhere and sometimes have no electricity. instead of being at the mercy of EDF i have decided to run a 12v lighting system alongside the 230v mains system. to test if a bulb would light from a battery i wired a 12v halogen car bulb to a battery with a switch. i kept...
  18. P

    Emergency lighting batteries - Power off?

    I have to change a number of batteries in emergency maintained lights, but am slightly concerned if I keep the mains power on I might potentially mess up the electronic modules. Turning the power off will slow me down so I prefer not to. Not something I do too often so advice appreciated?
  19. M

    Connect 25 AA batteries in parallel and series

    Hello, I have 25 batteries that are AA using 1.5 volts each, that is total = 37. 5 volts for 25 batteries. I want to know please the right way to wire all the batteries together to make a parallel and series battery pack. Please tell how to wire each battery together to connect all 25 AA...
  20. J

    How would you power this LED instead of using 8AA batteries?

    The LED light is for a moth trap (identifying not killing). At the moment I'm using 8 AA batteries. The batteries are 2000 mah so 1.6 amp hour in total (I think my maths is correct on that- 2000mah x 8 = 16000 divided by 1000 = 1.8 amp hour). The boost buck regulator has 9.6 volts going in...

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