battery

  1. A

    Safely disconnect battery string

    Hi All, I'm moving into telecoms and looking for some help on disconnecting battery strings. I come from a domestic background so have not got involved in battery strings before as I never touched solar. My questions is thus: How do you safely disconnect a battery string that is housed in a...
  2. littlespark

    Question for PV Battery experts

    Was having a look at our gas and electric bills today, and its getting depressing. I would like to keep using our appliances as and when we want... and apart from working out how to shut off the hot tub overnight.. i've not made any other changes. (will be confirming efficiency by using an...
  3. L

    Car radio battery wire zero voltage ! but original car radio is working when connected. Why?!

    Hi everyone I am new in this forum and this is my first thread. Car model: Toyota echo 2004 sedan. I used a multimeter to test the car radio battery wire ( blue/yellow) when it was disconnected from the car radio, its reading was 0v. ( as shown in photo 1 ) before and after ignition, isn't it...
  4. G

    Car battery protection w/rare car use

    Hi, I rarely (once a week or once in two weeks) use my vehicle and the car battery goes low, not enough to start. If I connect a 1Amp 12Volt charger to the battery just to provide power to whatever is slowly draining the battery, will it help? will it damage the battery? will it cause any...
  5. S

    300w power from auxiliary battery

    Looking for advice for how much power I can reliably get from a dual battery system please (note it will be installed by a professional, I am just trying to work out if it’s logistically possible to get the power I need) I have a Zero Breeze portable AC unit which I would like to run off an...
  6. HnyBear

    Battery Powered Led Strip Project - Need Help!

    I am trying to put some led light strips under the fenders of my fat tire E-bike. I’ve been looking at led light strips on Amazon, AliExpress and Alibaba for weeks. I’ve decided on, and please correct me if I’m wrong, SMD 5050 WS2812B 144 led per meter strips. I need 1 meter per fender. Many...
  7. R

    Outdoor Housing of Battery and Inverter - advice

    I have run out of viable space (that Mrs will let me use) to house my inverter and battery for when my solar arrives next month (GivEnergy). So have been looking at alternatives. Originally looked at stainless steel and GRP kiosks but that was going to cost me nearly £1500. So now i am...
  8. R

    New solar installation - cable sizing and no cables for battery installation...

    So, I already have solar (an older FITS installation) and it's been particularly successful so I want to extend this. I'd like to do two things at this point. 1) Add more panels in a couple of locations. 2) Add battery storage to provide some backup (power regularly drops for us) but mainly to...
  9. W

    Extension Lead for Battery Charger

    Hi Guys. Is it safe to use an extension lead with a single pin 48V battery charger for an e-trike? The charger has a standard UK 3-pin mains plug. If so, what length limitations would there be for the extension lead - I probably won’t need it to be long. This is the Battery Charger...
  10. Moley

    Anyone recommend a cheap battery spot welder?

    Anyone got any recommendations for a cheap battery spot welder. I'll only be doing a few every now and then so don't want to spend much on something that's going to spend a lot of it's life sat in a cupboard. It'll be around 6 x 18650 batteries about once/twice a month. I've been looking at...
  11. B

    Connecting coaxial power connector to the battery

    Hello, I want to have my battery as a main power source so I can plug it in to my device which have this coaxial power connector(outside using). Everything I need is to cut this EU Plug split the wires and connect to the battery, which one is the positive and negative wire?
  12. justcurioustwo

    Can a battery exchanger solve our EV problems?

    I personally think the EV concept needs a new approach. Instead of spending hours recharging the EV the user just swaps the discharged battery with a charged one. The exchange time would be les than it took to fill a standard car with gasoline. You drive into a narrow lane just like you now...
  13. woodster92

    Superdeal Meter: how do they work & best way to connect Solar & Battery storage

    I have a client on a Superdeal tariff from SSE, the Superdeal Meter has 3 sets of tails coming out of it feeding 3 DBs: (i) DB1 - the main board for the house, (ii) DB2 - a small board for all storage heaters and (iii) DB3 - an even smaller board for electric water heating. Very high electricity...
  14. C

    Remote battery kill switch

    Good morning - I installed a subwoofer assembly in the trunk corner of my BMW 330 coupe. It is bolted in, as securely as I could make it - and removing it is quite a chore ... However, it also covers the access panel to my trunk mounted battery. I understand that if/when I need to change the...
  15. C

    Dual phase Solar install with Battery - Getting batteries to cross phases.

    Ok so I am an electrician but don't really do solar, my partners sister has a holiday let complex, due to her energy bills rising to £36k a year they are going to get a solar and battery storage system installed... They generally close over the winter so the load during the winter will be just...
  16. James

    Tesla Truck is here 1kv battery 1Mw charging!!

    Have a look at this, some serious design gone in to it, it will be interesting to see how it affects the truck market.
  17. A

    Battery trip problem developed

    Hi, My camper has a new 12v battery and I have wired up a split charge relay with a 100 amp blade fuse near van battery and a 100 amp blade fuse after the split charge relay that joins to a pair of 110 amp hour 12 volt leisure batteries wired in parallel. However, between the blade fuse...
  18. B

    Car battery charging, how high should voltage go?

    Hi, I bought a car battery charger and plugged it on my car battery to test it (normal battery not AGM). my battery was probably already fully charged because I drove with my car just before using the charger. So this happened: the voltage on the charger started at around 12v? (not sure...
  19. J

    Inverter Size for Battery Output

    I thought I had an understanding of how to size an inverter but I think I have become slightly confused after taking to some proposed installers. I am looking at a 15 panel solar array with a proposed output of 6150KWH and was thinking of having two 6.5KWH batteries that would have their charge...
  20. P

    Suggestions for battery circular saw

    I already have some 18V Milwaukee power tools and was looking for a circular saw for general wood bashing duties, though having a metal cutting blade for trunking, etc, would be jolly useful. However, not only do Milwaukee have several to chose from, they are all pretty expensive for a tool I'm...
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