Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [battery]

The tag has no usage guidance.

0
votes
1answer
53 views

Estimate ROI of installing battery pack like the Powerwall

The power company charges more for power during peak hours than at night. In theory, a wall-mounted battery like the Powerwall or several competitors could help mitigate this by drawing power when it ...
2
votes
1answer
36 views

How can I figure out cordless drill terminal polarities?

I just got this Black and Decker SS18 drill and wanted to run it with my existing batteries but the drill has no polarity markings. Anyway to figure out which terminal is which?
3
votes
1answer
64 views

How can I fix this handheld vacuum cleaner?

This is a handheld vacuum cleaner with a simple circuit inside. I’ve charged it fully for a good while and also tried decharge-recharging it but no joy. All it can manage to do is ticking the engine ...
0
votes
2answers
45 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
123 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
votes
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
248 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
311 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
23 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
145 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
160 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
vote
0answers
47 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
147 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
607 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
84 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
votes
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
61 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
178 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 ...
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
461 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
179 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
128 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
128 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
163 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
975 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
111 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
189 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
837 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
702 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
242 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
310 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
277 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
214 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
282 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
19k 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
210 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
31k 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?