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battery

  1. C

    Looking advice on fixing laserlevel battery

    Hello, first time poster. I am here looking advice on how to connect my batteries in my laser level. I dropped it and it stopped working. Opened it up and the attachments to each battery have broken. I tried to.solder it but it doesn't seem to have taken to it..any tips or advice on how to join...
  2. E

    Simple Solar Powered Pump w/ Rechargeable Battery

    Hi Everyone, My aim is to build a simple solar powered pump with a rechargeable battery to water plants. The idea is to use a 6V 1W Solar Panel connected to a TP4056 (protected) to charge a 18650 Lithium Ion Battery. On the output is an MT3608 2A Boost Converter to step up the voltage to a...
  3. N

    Motion triggered battery powered dimmable COB LED light

    My view on life, in any field, is not to produce more but to consume less. Everybody told me this is a very eccentric weird mentality. Perhaps they are right. Nevertheless I have to build my project to make a highly efficient, extremely low drain, motion triggered 12V battery powered dimmable...
  4. F

    Fluke 199C

    Hi, I'm facing a problem with my FLUKE 199C oscilloscope battery which becomes dead very often and the oscilloscope will not turn on anymore even when the power adapter is connected. Is there any way to make it run on the power adapter regardless of the battery condition.
  5. D

    E39 530i touring - Nav fuse stray voltage on earth side - battery drain

    I have recently traced what I think is probably causing my battery drain to fuse 56 in the boot of my touring which is one of the navigation fuses. I thought could just pull the fuse to stop the drain as I never use the sat nav anyway but its had some other consequences. When I pull the fuse...
  6. S

    Electrolux Rapido 7.2 V battery pack and motor replacement

    Dear experts, I need your kind help for repair my vacuum cleaner, Electrolux ZB 4106 The motor run at very low rpm and I’ve cleaned everything before dismount it. The machine it’s 8 years old so I think that some maintenance is needed Could you let me know if this battery pack can be...
  7. S

    Do I need an inline fuse between my alternator and battery isolator?

    I purchased a 95 amp battery isolator and my alternator pushes 95 amps but I'm assuming that it may spike above that occasionally. Should I put a fuse between the two? I am only aware of 100 amp maxi fuses would that save the isolator for damage or do I need to purchase a battery isolator rated...
  8. I

    Dual Battery set up and powering lights

    Hello All, My Daughter is an apprentice carpenter and we have fit her van out with insulation, covered the walls with painted MDF and made some storage boxes, that she can put a mattress on for camping. We have run 240v LED string lights in the roof panel and now want to power those lights and...
  9. M

    Solax x1 ac and battery

    Hi, ive got an existing solar array of 2.5kw with a solis inverter, i can buy a solax x1 ac charge controller and triple power battery 4.5kwh with bms for 2k My question is how does my existing solis inverter connect to a solax x1 inverter ? and also do i even need my original solis...
  10. G

    can anyone tell me what this crimp connector is as I need to get new ones for this stranded wire to enable both cables to fit in a caravan battery con

    can anyone tell me what the four crimp connectors are called, (the lower wire in the picture) as I need to get new ones for upper - just need to know what to search for, they are for a approx 10mm cblestranded wire to enable both cables to fit in a caravan battery connector-as you can see they...
  11. G

    where is battery located please, emergency lighting

    Hello, this emergency light does not come on when power is cut. There is a red light on when house has power, indicating power to the unit. The bulb works fine. I thought the battery may need changed. It has not been changed for a long time. How ever I can't see where the battery is. Is it...
  12. E

    Wiring Reverse Camera on with key powered by battery

    I'm asking for assistance about how i might be able to make this happen. I'm thinking a relay would do this but i have no idea which relay. I'm looking to have a constant on rear camera that i can access from my head unit any time while the vehicle is on. I do not want to use with the wiring...
  13. A

    how battery current flow

    Hi I know that batteries get constant voltage and variable current , but why (for ex. cell battery) has 5v rating as standard but not 1a std , i mean why the amp change (500mA , 1A , 2A ...) if voltage is always the same ?? (I didn't get that in simulation !)
  14. happyhippydad

    Best price/place for a makita 5aH battery.

    Hope you're all having a good weekend! :) I am having a lazy day playing in front of the laptop nursing a bruised rib from boxing :anguished:🥊, so... I'm going to treat myself to a new makita 5aH battery as all I have are 3aH. Best price I can find is £49.99 + £4.98 (all inc VAT) from...
  15. T

    Unidentified issue

    Hi Everyone, I am struggling with a problem for what i cannot find any solution. I have an Opel Astra H 1.3 CDTI form 2008 and started to have some issues for a while. The situation is the following: My battery died on a morning, it was strange since the battery is only 3 months old. I took it...
  16. T

    Seeking Dewalt Battery HOUSING 20v

    It appears that this may be a UK only forum, but I will at least ask around if that is allowed. I am in search of the small DeWalt 20v battery housing. I have contacted DeWalt themselves, but they do not offer it for sale. Is there anyone that knows where I can find a nice, pristine housing or two?
  17. M

    Looking for a charger for 4S configuration 18650 battery

    Hello, I have 120 NCR18650B batteries which I'll be using to build a 4S configuration battery. I'm looking for recommendations on a charger from aliexpress/ebay, I don't really need a fast charger so I don't really mind if it would take very long to charge. As far as I understand I simply need a...
  18. S

    offgrid electrical connection using generators and battery to run a house

    I have a chance that I might be able to purchase a rural site for my home(self-build). The problem is my limited budget and timeline( full house completion) does not allow for an over 2k euro connection for a basic electrical connection to run a household for parents and kids aged 2,6,8 I...
  19. P

    What would experienced electrician do in such situation:

    There is a need to power a battery charger, which requires 3 ph 480V 20A circuit. There is no 480V available at this location, however there's an electrical panel 120/240V where 3 ph 240V is available. Loads in that panel are connected by 100A breaker (installed inside the panel). There was a...
  20. littlespark

    Solar So called “new kind of battery”

    Got a advert through the door, obviously targeted, as I have panels on my roof. A company who would install a battery system to store the excess electricity that my panels produce and I would be able to use that when it gets dark. I won’t mention the actual company, suffice to say their system...
  21. P

    Leisure battery charging problem

    What am i doing wrong??? i recently bought 2 new leisure batteries from Halfords, linked them together neg to neg, pos to pos to double my bank while working away off grid. i fitted a Cargo 12v 140A Split Charge Intelligent VSR Relay but for some reason it just keeps flicking on and off every...
  22. telectrix

    Van Battery.

    Mine just starting to play up. Goes flat overnight in the cold. Bear in mind it's been on the Hiace for 4 years and was salvaged from my old van then. just phoned local place... £95. searched ebay, Yuasa 90Ah, 4 year warranty. £85.99 with free delivery, bit currently has a 20% discount, so £68...
  23. happysteve

    Is there a standard battery for alarm system contol panels?

    (Domestic) I don't touch alarms, out of my area of expertise. However, while doing other electrical work, quite often I'll switch off the circuit (or board) and the alarm will go off, always due to the fact that the backup battery in the control panel is dead. Restore power, alarm stops. My...
  24. Dan

    Lithium-ion battery makers awarded nobel prize

    https://www.iflscience.com/chemistry/creators-of-the-lithium-battery-win-the-2019-nobel-prize-in-chemistry/ The Royal Swedish Academy of Sciences has awarded the 2019 Nobel Prize in Chemistry to John B Goodenough, M Stanley Whittingham, and Akira Yoshino for the development of lithium-ion...
  25. hey-hey-my-my

    Trouble with charging a large 12v battery

    Hello! I recently upgraded the 110ah battery in my camper van for a 260ah AGM one. My solar panels (200w via MPPT, soon to be doubled) struggle to keep up with my consumption, so once a week I hook up the battery to mains using CTEK's 5A charger, which supports AGM batteries but is not...
  26. M

    12v Battery. Pump and lighting. Recharge

    Hello everyone, hope you can help me. I have started a plan to build a small camping kitchen that fits into my 4x4, and comes out at the sight. I have the plumbing sorted, and quite proud of that, hot and cold water. My issue has come to the electrical side, running the water pump and lighting...
  27. R

    Battery Tester

    I’m looking for a battery tester for work, ideally for fire alarms and alarm panels. Does anyone have any recommendations?
  28. B

    solar pannel nickel-iron system question!?

    Ok, so I am a little stuck on one thing for a while now. For a nickel-iron battery bank of 24 volts, each cell is 1.2 volts and has a charging voltage of 1.65, so 33 volts is needed when for optimum charge. The 24 volt, 100Ah battery bank requires a optimal charge rate at c/4 (25 amps for a 100...
  29. M

    what's required (mains or battery)

    Normally I would install mains supplied and interconnected smoke and heat alarms in a rented property or in any alteration but I have a customer convinced that battery ones with radio link is acceptable. Any installs I do normally state wired, interconnected to be installed but an other spark...
  30. M

    Making a 12v 4s battery pack from 18650

    Hi, I have around 20 18650 battery just sitting around, so I thought of making a 4s 12v(well more like 12-16v battery depends on charge). That should be fairly easy overall, just looking for some advices to make it as good as I can. One thing I would like to try is avoiding soldering as much as...
  31. C

    18 volt solar battery charger

    Hello, hoping for advice on this... We intend to use 18volt Makita power tools high in the Khumbu mountains near Everest. With no mains power on site I’d appreciate any advice on an affordable yet lightweight, portable and efficient set up to recharge batteries. Probably x10 4.00 Ah units per...
  32. Sumer321

    Car battery drain

    Serious power drain on battery on Audi 80 1992.30 mins after turning engine off no battery power won't start.ALL main components seem fine.After turning engine off a humming noise comes from back of engine ?this stops if I disconnect negative terminal on battery.Could this be causing power...
  33. D

    Battery powered Rotating Beacon

    Hello Hope everyone is well and thanks for creating this forum. I'm looking for some help for a project I'm doing. It's a Short Film where I would like a red rotating beacon to cast its light on a solider running in a bunker's corridor. I found a rotating beacon that comes with a car plug...
  34. G

    AEG Multi-voltage battery charger

    Hi Folks :-) got a query. Can my AEG AL9618 Battery charger that came with my BSB 18STX-R drill, also charge Li-Ion batteries? The drill originals are Ni-cd 2.0ah, and I wish to upgrade to 3.0ah Li-Ion ones. The front of the charger does show various images of what the lights should do. And it...
  35. R

    relay cause flat battery?

    Hi, Apologies if this is the wrong place for this but want to confirm something. I have wired up a 12v lightbar on my ATV using the attached wiring loom layout, but I have been told by some that this setup will cause the battery to drain/go flat over time due to the relay always having current...
  36. L

    New Liquid Battery

    I want to know what people think this battery will do in the market. New residential liquid storage battery (not lithium-ion) 12 kwh storage 3 kw continuous wattage, no peak 12 year warranty at 90% capacity No moving parts Environmentally friendly Physically safe 4' x 3' x 2' size $7,000...
  37. S

    Which fuse rating to between starter and leisure battery?

    What fuse rating do I need to put in between the starter and leisure battery? I have a 12V 75AH Starter battery and 110Ah leisure battery. Cable size 16mm or 8mm. (this is for my off the grid van :) )
  38. S

    Adding PV diverter to battery system - using delay switch??

    I am trying to add an Apollo Gem diverter to my battery grid tied system (Victron ESS). It is not going to work because both systems are fighting for the surplus solar power to either charge the battery or divert to immersion. If I add a delay timer switch in the immersion circuit so the load to...
  39. S

    How to get some type of battery to last long pulling 1500 watts

    I'm trying to run multiple lights that take up 1500 watts each. I know I can get a ups and a battery with that can run 1500 watt for 42 minutes and take 10 hours to charge. Any other ideas?
  40. B

    Battery charge counter

    Hi guys, I hope someone could help with my problem. First of all i am zero when it comes to electric. So my issue, i have a rental company for little underwater scooters here in spain. I work with beach rentals who rent out my scooters to their clients. I charge the beach rentals per 30 min...
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