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Questions tagged [battery]

The tag has no usage guidance.

0
votes
2answers
42 views

How to replace a watch battery? [closed]

I'm trying to replace the battery of my watch, but I can't work out how to take off the back cover, to get to the battery? (see photo) I've Googled on how to remove the back cover of watches, but it ...
0
votes
1answer
41 views

Switching drill batteries [closed]

I have a Porter-Cable 20 volt impact drill and circular saw... I just came across to 6 amp hour Milwaukee M18 batteries for free... I want to run my Porter-Cable impact off the M18 battery how do I ...
1
vote
2answers
114 views

How can I make my home internet router work with a battery?

I have an ZTE zxhn h108n router, which needs an 12 V input. I want to make it work when the electricity goes off.
0
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2answers
45 views

How to complete this circuit

I got some decorative multi color led wire. It is broken at one place now. I need to connect the wire to complete the circuit. I am new to this and I am trying to learn. I tried twisting the wire so ...
1
vote
1answer
126 views

Is use of a deep cycle marine battery indoors safe?

I have a backup sump pump, a 12V "Basement Watchdog". However, immediately after installing it, I found the battery was basically dead. Not wanting to buy a very expensive replacement battery, I got ...
2
votes
3answers
309 views

Is it safe to use a battery charger to test the capacity of a non-rechargeable battery?

I have this battery charger at home. It has a voltage test function. I also have a lot of non-rechargeable batteries lying around. Is it possible and safe to use the charger's test function on non-...
0
votes
1answer
21 views

Temperature Sensor with Current Sensor

I have SMA - Sunny Island inverter, the one that is use in Off-Grid Solar PV System. I am getting error because there is no Battery Temperature Sensor connected. I have a plan on buying the ...
0
votes
0answers
125 views

Porter Cable NiCd 18V batteries - Lithium replacements?

Does anyone here have any experience with these tools and battery options? What about chargers? I understand the need for a different charger; my specific question is whether anyone has experience ...
2
votes
2answers
144 views

“power buffer” in front of generator for peak power shaving?

I need to do some work off-grid, and I only have a 1000W generator to drive my power tools, which easily draws twice that (and probably more when starting up) when cutting steel. Instead of getting a ...
1
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0answers
38 views

i'm having trouble with battery not charging

I think I have a battery going bad. Charged over nite and light read charged. but in the first 15 mins it died on me how long does it take to charge a hitachi battery 18v
2
votes
4answers
143 views

How to mitigate voltage drop?

I currently have a sump pump in my basement that is normally powered by plugging it into an outlet. When we lose power, I have a 100 amp hour marine deep cycle lead acid battery along with a 1200 watt ...
0
votes
2answers
496 views

Sump pump battery backup

I currently have a sump pump in my basement. I recently lost power during a rain storm and had to pump water out by hand until power was restored so I am looking to install a battery backup for the ...
0
votes
2answers
82 views

Where to get solid aluminum “battery” replacement cylinders? [closed]

I once saw an ingenious setup while doing work for a state agency. A contractor created a "black box" that contained a Canon camera in it for photographs that normally needed batteries in both it and ...
0
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0answers
31 views

Battery terminal in wireless light switch corroded

I have a wireless light switch in my garage which uses 4 triple-A batteries. When the switch quit working recently, I took off the cover to replace the batteries and saw that the terminals were all ...
0
votes
1answer
58 views

Storing energy from small wind generator to power led garden lights

I want to create a small wind generator using a bike generator (se picture) to power some led garden lights during the night. I have so far created a 1m in diamater wood propeller and a rotating ...
0
votes
1answer
70 views

Looking for combination of temperature sensor and thermostat - any hints?

After reading a lot, I am still very confused... Maybe you could give me some hint? I am looking for: a temperature sensor in my room a thermostat on my radiator It is important to me that these ...
0
votes
1answer
166 views

Opening and closing solenoid deadbolt with key

I am starting a project to implement a "smart" lock for my door using Arduino nano, a solenoid deadbolt and a fingerprint reader. Which on its own works fine, but the whole project will run on a ...
1
vote
0answers
31 views

Using excess energy during float phase - am I using up my batteries' cycle life?

I have a hybrid power system: 3kW solar; 2kW wind turbine; 1kW water wheel, that feed a 48v (flooded lead acid) battery bank. Presently, after absorption charging is complete and the system goes into ...
0
votes
0answers
1k views

How to determine age of 18V Makita battery

There are 2 serial numbers on it, one of them begins with letter D. Does any of these represent the manufacturing date? There's also numbers like 1-2 or 4-1. What does that mean?
1
vote
1answer
54 views

Would a single section of 3 LED's from a LED strip still need the required 12V?

I have some LED strips which run off a 12V power brick, but what I don't know if that applies to even a single section which is only 3 LED's? I was basically wondering if there was a way I could cut ...
2
votes
1answer
441 views

Charging a battery with a solar panel

I want to light a cabin. I have the following: 75w 12V Coleman solar panel (two bare wire ends) Large car battery from a Jeep Even larger (boat?) battery - an Optima Yellowtop 34/78 50/10/2A 12V ...
1
vote
4answers
173 views

Is Having Multiple Charge Controllers on a single 48V System/Battery Bank a “Bad Idea”?

I have a 48-volt renewable energy power system in my house that is presently off-grid. It has: - a 6kVA inverter/charger that can connect to a generator or the grid (charge controller #1) - a 2kVA ...
3
votes
1answer
120 views

Offgrid L14-30 connector to solar generator

I have a small off-grid cabin in the woods that I recently purchased. The previous owner had a L14-30 generator connector installed on the outside of the cabin and wired it with normal 120v outlets 4 ...
0
votes
1answer
125 views

I soldered 2 AAA batteries together in series but am not getting double voltage [closed]

I'm sure this is rudimentary, but I'm very inexperienced in anything practical with electronics. Would like to try to get a 3volt battery go run some LEDs. I thought I could just take two AAA ...
0
votes
2answers
160 views

recharging 18V battery back in parallel

So I'm working on a project where I'm wanting to take several 18V ryobi battery packs, put them in parallel to increase the capacity, and then use that to power my project. I think this should be ...
1
vote
1answer
931 views

Can I connect a battery reserve to my solar attic fan?

I have recently purchased a solar powered gable fan for my attic. This fan will only work when the sun is up, but I would like a little more out of it during the early evening hours (no sun). Is ...
1
vote
1answer
107 views

Making a Solar Power Battery Backup Unit

Ok, so this is a small battery backup unit. I want to just start small and see if I can get the idea working. I'll buy this 20 watt solar panel with charge control http://www.amazon.com/20W-12V-...
0
votes
1answer
180 views

Does a leaking cell destroy the other cells in the same battery?

I have a device I have never used before. Unfortunately I found out that one of the device's 3 LR44 cells was leaking white potassium carbonate. See my sketchy illustration below. I have only 2 new ...
2
votes
2answers
818 views

Solar panels and batteries as primary, grid as backup with auto transfer switch [closed]

I've been toying around with this idea and I'm not sure if it's feasible. I live in an area where the power company has recently adjusted rates to make grid-tied net metering rooftop solar ...
0
votes
1answer
2k views

Wiring a Tesla Powerwall into an Existing Solar Install

I've been looking at the cost and feasibility of augmenting my existing 5kWh solar install with battery-backed storage to shift usage of the solar power that I generate to more useful times of the day/...
1
vote
2answers
1k views

Which batteries are compatible with the DeWalt DW9107?

I have a DeWalt battery charger model# DW9107. Which batteries can I charge in it? It says 14.4volts I have a DeWalt hammer drill model# DCD950B. Will the battery for it, DC9096 work with my ...
1
vote
1answer
3k views

Ryobi 18v. Lithium says fully charged but no energy

Recently I was using a Ryobi cordless drill to work on some drainage equipment. Unfortunately it caused a spill and a little water got on me and the drill. I did not think it was a lot of water (and I ...
0
votes
1answer
2k views

Can you charge Bosch 18V batteries from your car?

I'm trying to find out if Bosch or someone else makes a charger for their 18V cordless tools that can charge from the cigarette lighter (actually from a solar panel that has a 12V cigarette lighter ...
2
votes
1answer
682 views

Why does the Tesla PowerWall operate at 350v - 450v?

According to the Tesla website the new Powerwall operates at 350 to 450 volts? Why such a high voltage when most solar battery banks operate at 48V?
3
votes
2answers
239 views

Solar backup system, advice needed

Here in South Africa we are experiencing frequent power blackouts, as I work from home on a small property (generators not an option) this is rather disruptive to my work as a programmer. So bearing ...
0
votes
1answer
301 views

Solar charge controller wiring

I have the proper polarities connected from the panel and battery to the controller. Above is a photo of the HQRP charge controller wired to a 30watt 24v solar panel and this 24v battery: I checked ...
1
vote
1answer
270 views

Can I use Eneloop batteries in my thermostat?

I have this LuxPro thermostat http://www.luxproproducts.com/pdfs/spec_pdfs/PSD010Bc_NL_ENG_Manual.pdf There's a warning in the very first section that says to use only Duracell or Energizer Alkaline ...
0
votes
1answer
212 views

Verizon FIOS battery warning beep [closed]

My Verizon FIOS system has a back-up battery to keep the phone running in the event of a power failure. This battery is approaching the end of its life and makes a "BEEP" every five minutes or so. I ...
2
votes
2answers
12k views

What does it mean if my Watchdog backup sump is flashing “Add Distilled Water” even with brand new battery?

I just went through the laborious process of setting up a replacement backup battery for the Basement Watchdog backup sump pump system. I had to pour the battery acid in myself. Now in addition to ...
3
votes
2answers
5k views

What could cause a battery hedge trimmer to have white smoke come out of it?

For the most part my hedge trimmer was doing a really great job. I did have a little trouble with the thicker stems, so I would swing the trimmer at the stems while cutting, which helped. However, a ...
0
votes
1answer
278 views

Wired vs Battery Impact Wrench

I was considering the purchase of a 1/2" electric impact wrench. The first application is to change out an anode rod for an electric water heater. I was looking at some online, and the torque given ...
1
vote
5answers
18k views

Replacing battery in backup sump pump

I have a PHCC 2400 battery backup sump pump. It started beeping today and the controller light indicated that the battery terminals were corroded or that the battery was bad. I opened up the case ...
0
votes
2answers
3k views

Powering 5 foot section of LED flexible light strip with AA batteries

I need to light traveling show cases with no AC power available. How do I hook up LED flexible light strips to AA batteries. (I bought 20 led per foot reels and 40 led per foot reels. Single color, ...
2
votes
2answers
1k views

How can i set up a Solar Panel to charge a 12v DC car battery and power a Raspberry Pi?

I've pulled together a few spare parts that i've had laying about for ages now and I finally have a bit of time to try do something with them. I've got a solar panel which puts out ~22vDC @ ~2Amps ...
4
votes
3answers
205 views

Why have cordless tools changed the battery style?

I was looking for replacement batteries for my cordless tools (drill, light, sander) and have been unable to find any. My current battery is the style with a neck that inserts into the tool, but all ...
4
votes
3answers
3k views

How can I use cordless drill batteries in projects? [closed]

I found this project on Make for an automatic ball thrower for your dog, and am in the process of wrapping it up. For power, I'm using a cordless drill battery. (Specifically, a Ryobi lithium one+ ...
25
votes
6answers
30k views

How to prevent batteries leaking out in devices?

Is there a common method of preventing batteries from leaking out and destroying the device? Why does this happen in the first place? I have laid another head lamp to waste because it was sitting in ...
5
votes
3answers
3k views

Will neodymium magnets harm my power drill battery?

I glued some magnets onto my power drill battery to use for storing drill bits on - but will the magnets affect the battery life?
4
votes
3answers
5k views

Should I leave NiCad rechargeable batteries charging when not in use for long periods?

I've got an Black & Decker electric trimmer that gets used about 2 months out of the year. It uses a NiCd battery pack. For optimum battery life, should I leave it plugged in all year when not in ...
8
votes
4answers
49k views

What should I do with leftover sulfuric acid from a sump pump battery backup?

In our new house, we found that a previous owner installed a sump pump battery backup unit, which is nice. The battery in the system is like a car battery, but it's the kind where you initially add ...