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2 answers
81 views

Why are my wired smoke detector backup alkaline batteries (i.e. 9.0 Vdc) measuring over 10.0 Vdc after being installed for a year?

I have six (6) wired smoke detectors i4618AC (w/9v battery backup), and also on one (1) wired smoke/CO detector KN-COSM-IBA (w/AA battery backup). The detectors are all approximately 5 years old and I'...
D. Davis's user avatar
0 votes
0 answers
64 views

Ryobi Lithium+ 18V battery says fully charged but provides no energy

The lights on both the battery and the charger says it's fully charged. However, the battery fails to power either of my Ryobi fans. Both fans work just fine with my other Ryobi Lithium+ 18V ...
Kate R.'s user avatar
0 votes
2 answers
58 views

Can I connect batteries of same voltage but different aH for my sump pump back up batteries?

I found much cheaper AGM deep cycle marine batteries and want to connect these in parallel to my already existing Sumpro set up. (https://www.ionproducts.net/literature/battery-backup-systems/legacy-...
Pumpa sumpa's user avatar
1 vote
2 answers
115 views

Is this 12V battery backup set up correctly for a 120V sump pump?

I'm trying to replicate the battery backup setup described in this video and in text below. I'll state what the video demonstrates, then share the parts and plan I have. I'm looking for input on how ...
cr0's user avatar
  • 1,379
0 votes
4 answers
111 views

Restore capacity of cordless drill batteries (NiMH)

I have found a box with some old batteries for an Hilti cordless drill. These batteries have not been charged for a long time, as well as having sat through cold and warm surroundings in the attic. ...
786yt's user avatar
  • 1
1 vote
3 answers
192 views

Unsure about sump pump backup battery replacement

So after a long power outage (> 8 hours) it appears that the battery for my backup sump pump has died and I want to replace it. I have a Basement Sentry I, Model 507 by Zoeller The manual ...
Rex's user avatar
  • 11
1 vote
1 answer
38 views

Remove blueish coating that has leaked battery [closed]

An appliance was in storage for many years, unfortunately with batteries inside. One of the batteries has leaked. How can I remove the blueish coating from the metal contact that sits inside the ...
rookie099's user avatar
  • 113
2 votes
3 answers
852 views

Replicate "Behind Wall TV Power" - Idea or Explosion? [closed]

Looking to replicate this: https://www.amazon.com/dp/B001PB7UVA My reasoning is that there is a UPS battery backup in the basement that can't be moved upstairs (for wife reasons), but needs to provide ...
Tim's user avatar
  • 31
5 votes
3 answers
1k views

UPS / Battery Question

I have two Cyberpower 1400va (900 watt) pure sine wave UPS systems. They are over 5 years old and the lead acid batteries inside them are shot. The units use two 12v 8AH SLA batteries in series and ...
EZ CAPS's user avatar
  • 51
3 votes
3 answers
92 views

Power issues when extending a 12v DC cable from solar generator

Summary I have an AllPowers R600 Solar Generator, which can output AC and DC power I want to use it to power my laptop in the next room (approx. 4m away) The 1m charger works fine when I connect it ...
Martin's user avatar
  • 131
0 votes
0 answers
38 views

Borehole system running on inverter

3kVA 240V inverter and three gel batteries 100Ah 12V. And I am only running my borehole system 1st pump .38kW, 2nd pump .75kW. The inverter lasts for five mins then goes off because of low battery.
Muaawiyah's user avatar
0 votes
1 answer
101 views

Replacing dead mower battery with modern battery

I have a Black & Decker PowerSwap mower I bought perhaps 7 years ago. Its a battery-operated model that came with 2 60V "Max" batteries (it only needs 1 to operate). It otherwise still ...
T.E.D.'s user avatar
  • 349
8 votes
8 answers
3k views

Are deep-cycle batteries for off-grid power tolerant of temperature changes? [closed]

I have a small shed that is off-grid and needs occasional lighting. During the day I can open up the doors and have sufficient light, but during the winter when I am out there more in the evening, I ...
user2259438's user avatar
1 vote
2 answers
300 views

What is the best way to store Lithium-ion (Li-ion) and Nickel Cadmium (NiCad) batteries used for power tools?

I have power tools that use Lithium-ion batteries, and i have power tools that use Nickel Cadmium (NiCad) batteries. I only use these power tools maybe 5 times during the summer months. What is the ...
Jeffrey's user avatar
  • 43
0 votes
3 answers
2k views

Why does my Kobalt KST 2540-06 weed eater stop every minute?

My Kobalt KST 2540-06 weed eater will only run for a minute and then stop. I release the trigger and then squeeze it again and it starts running again only to shut off after about a minute. No matter ...
Nathan's user avatar
  • 1
4 votes
2 answers
2k views

Can a completely evaporated deep cycle battery be brought back to charge?

The battery fluid on my sump pump Marine Deep Cycle Battery dried up to be completely gone. I've replaced it with distilled water. Will the trickle charger bring it back to life, or am I in the market ...
Paulb's user avatar
  • 192
0 votes
2 answers
86 views

Can I repair this lithium battery pack [closed]

I carelessly left a worklight outside in a tarp, and was unfortunate enough that it rained. I appear to have drowned my 5.0AH Ryobi Battery pack... I have average soldering skills, so I am not averse ...
JoSSte's user avatar
  • 181
1 vote
1 answer
203 views

Does a house battery need over-current protection on both Positive and Negative cables?

I'm reading the US NEC 2020 article 706 and trying to understand the required over-current protection needed between the battery and the inverter. My understanding is that a disconnect is required ...
Mike Gray's user avatar
  • 115
0 votes
1 answer
49 views

Is it safe to replace a battery with one that has a lower max charge current?

I'm trying to replace the batteries on my hand vacuum (black and decker CHV1410L), and having pulled out the batteries, they're using some 18650s (I've never worked with them, but there's a spec sheet ...
Kolichikov's user avatar
0 votes
1 answer
268 views

EZ Generator Switch with Generac GB1000 and gas furnace

Can I use an EZ Generator Switch as a transfer switch with a Generac GB1000 battery and a gas furnace (Bryant 340aav). If so, should it be setup as bonded neutral or floating neutral (I'm guessing it'...
Felix's user avatar
  • 3
2 votes
1 answer
477 views

How can I safely clean up a Zinc Chloride battery leak?

As we changed old batteries, a rusty liquid was smeared on the floor and hands. I wiped it up and opened the window, but the metallic smell lingers in the room still. Is the metallic smell from the ...
Iva Nova's user avatar
0 votes
4 answers
892 views

What battery type is most suitable to power a shed across temperature range -10C to +40C?

So I am gathering information on what I need to bring together to create a solar powered LED based lighting system for my shed. I need a battery, a charger controller for the battery, solar panel and ...
gyuunyuu's user avatar
  • 325
1 vote
2 answers
185 views

What light switch is this? No longer works after 4 new aaa batteries

Was asked to replace the batteries in this light switch with new ones but now the switch no longer turns the light on or off. Can someone help me identify what light switch I have or tell me why it no ...
Bronson Fuliere's user avatar
0 votes
1 answer
752 views

How do I avoid overcharging the inverter battery and keep it healthy [closed]

I have installed the Luminous Inverter Battery (lead acid) as power back up for essential electrical appliances at home. There is not much electricity cut. I just want to be sure that I'm not ...
CuriousMan's user avatar
-1 votes
2 answers
99 views

how to charge marine battery at my wall [closed]

i have all kinds of batteries in my house. when my xbox controller is out of battery, i charge it from my wall. when my phone is out of battery, i also plug it into the wall. i'd like to get a ...
Walrus the Cat's user avatar
1 vote
1 answer
139 views

Why does my 12 V, 500 Ah solar battery bank drop to 60% as soon as 4000 W inverter turns on pulling 2100 W?

I have five Inerstate DCM0100 wired up to give 12 V, 500 Ah. I have a Renogy 40A MPPT Rover Charge Controller. I have a Jarxioke 4000 watt inverter I purchased today. Precursor this knowing that I ...
user avatar
5 votes
2 answers
3k views

Is a charged mower battery which reads under 12 volts in need of replacement?

I have a John Deere D110 that last ran around two weeks ago. I went to start it last night and nothing; it wouldn't even crank and the starter wasn't even clicking. I thought it might be a completely ...
Zach Nicodemous's user avatar
2 votes
2 answers
171 views

How can I achieve blackout resilience on a grid-connected solar installation?

I recently installed a 3.6kw solar panel setup at home. I added an inverter and a 3.6kw battery. When I asked if that would work on case of a blackout the installer told me it won't - backfeed ...
Juan's user avatar
  • 161
1 vote
2 answers
3k views

How to remove swollen battery from flashlight?

I have a small LED flashlight that runs on a single AA battery. Apparently I let it sit too long and the battery is now swollen and corroded and I can't get it out of the flashlight. Previously, ...
Matt's user avatar
  • 113
0 votes
1 answer
2k views

Can any amp-hour capacity battery be used in any Kobalt 80V cordless electric mower, or is each Kobalt 80V mower amp-hour specific?

I have a 2.5Ah 80V battery from Kobalt for a weedwacker and am looking to get a mower. I see some good used Kobalt 80V mowers but it's not always clear if it was originally sold with a 2.5Ah battery, ...
cr0's user avatar
  • 1,379
1 vote
4 answers
104 views

How to prevent discharging car battery completely? [closed]

Background: I'm doing some offgrid camping on public land, but not on a campground, with my van. I have a photovoltaic generator with 1kw of power, but I'm considering replacing my van battery with a ...
Clay Nichols's user avatar
2 votes
4 answers
620 views

Can an inverter be supplied by a battery with lower AH than required for designed VA?

I'm looking to provide backup power to a home CCTV system. The PoE switch has a maximum rated dissipation of 78W. Each camera draws a peak of 7W. Since each camera is powered by the PoE, I assume the ...
Everyone's user avatar
  • 391
0 votes
1 answer
2k views

Deep cycle marine battery for Zoeller sump pump - how often to replace?

I have a Zoeller sump pump with a deep cycle battery. How long do these deep cycle marine batteries last and need to be replaced?
shikarishambu's user avatar
12 votes
4 answers
9k views

I turned a breaker off, and now the security alarm system won’t stop beeping

I turned off a breaker for about an hour. I then heard a low beeping noise, not the full-blown alarm siren. I turned the breaker back on, but the beeping persisted. We called the alarm company. They ...
YesterdaysTools's user avatar
-1 votes
1 answer
104 views

Rewiring charger plug

I've got a mains charger for some battery powered clippers which had has the cable cut clean through. It's not a standard charger fitting, so I'm keen to repair it. The cable consists of two wires, ...
rbennett485's user avatar
0 votes
1 answer
5k views

Deep cycle battery amp hour confusion

I just got a group 29 duralast marine deep cycle battery from auto zone. The group 29 is the first link below. I got it home and looked online and found that the group 29 battery weighs 10 pounds more ...
Justin Todd's user avatar
0 votes
0 answers
318 views

How to connect a whole-house battery?

I've been curious about installing a small home battery (4 - 7 kWh) to take advantage of time-of-use (TOU) billing. The idea is that the battery charges from the grid off-peak and then the home ...
Aaron_H's user avatar
  • 289
0 votes
2 answers
233 views

Suggestions for connecting a small UPC (battery backup) to a single receptacle/outlet that will power a wifi mesh router

tl:dr What is a safe way to connect a simple plug-in UPC battery back-up so that it can power a single receptacle on another side of a wall? We have an older farm house that has been expanded a few ...
thornomad's user avatar
  • 127
1 vote
1 answer
119 views

Is there any downside I need to know when I add new solar panels to existing ones?

I currently have about 12 LG solar panels installed on my roof. They only produce about 3kwh at peak sunlight condition even though they are nominally a 4kwh system. It is because of my house's ...
Anthony Kong's user avatar
19 votes
1 answer
9k views

FirstAlert smoke detector low battery warning continues after opening battery drawer and replacing batteries

Note: I'm creating and immediately answering my own question because I wasn't able to find documentation of this solution online. My condo is equipped with a FirstAlert 7010BSL smoke detector (...
Reign of Error's user avatar
-1 votes
1 answer
160 views

Excess inverter noise, low voltage

I'm not entirely sure if this is the best place to put this, but I'm having an issue with a mega-battery I'm working on. The battery is two AGM 12v batteries in parallel, with an inverter stepping up ...
Proxy303's user avatar
  • 594
-1 votes
2 answers
1k views

How to force alarm clock to have the screen always on [closed]

I have an alarm clock, that has batteries and a power cord as a power source. If it's using batteries, it turns the screen off after a few seconds. If it's plugged in, then the screen is on ...
Vitalie Belinschi's user avatar
2 votes
6 answers
4k views

Multiple small AH batteries vs one large battery [closed]

I finally am making the switch to battery tools. Looking to buy some kits and bare tools as well. I have the option of getting two 1.5AH batteries or a single 2AH battery. In theory this should be ...
mhost's user avatar
  • 129
1 vote
1 answer
121 views

How to turn a Nest or Nest-E thermostat to completely off (no power, no battery)?

Is it possible to remove the battery, or otherwise turn a Nest thermostat completely off, for times when there is no power to the furnace? This is to avoid draining the battery in the Nest completely,...
Bryce's user avatar
  • 10.9k
-1 votes
1 answer
139 views

Install battery on honda generator?

I have a Honda generator and I want to install the battery. Somebody else took the old battery out, so I don’t how they did that. The problem is that I only see a gray cable, a black cable, and a ...
rbhat's user avatar
  • 2,083
5 votes
12 answers
4k views

How to make a cap to cover the battery terminals of Ryobi batteries?

Ryobi batteries have a protruding part with battery terminals on it. Here's an example of what the battery looks like. I'm worried that if the battery is stored in a carrying bag with lots of metallic ...
juhist's user avatar
  • 239
0 votes
1 answer
84 views

Electrical Back-up Solution

I have a 350 Watt appliance that I need to run pretty much continuously. An electrical outage of a few seconds isn't a problem but more than a minute or two becomes an issue. So I need a back-up ...
L84Dnr's user avatar
  • 3
0 votes
1 answer
366 views

Same Bosch batteries, but one battery only works in one tool, what can I do?

So, I have some BAT612 18V batteries from Bosch. I should be able to use both batteries with either of my tools (Angle Grinder - GWS18V-45PC, Drill - DDS181A), but one battery works in both tools and ...
GregTheHun's user avatar
2 votes
5 answers
4k views

Use a 24V LifePo battery in a UPS designed for lead acid batteries? [closed]

I have an existing APC 1500 UPS, designed for use with 24v lead acid batteries and want to know if it would be possible to replace my dead lead acid battery with a 24V Lithium Iron Phosphate (LFP) ...
williamc's user avatar
0 votes
1 answer
69 views

Direction of electron in car circuit [closed]

I read this somewhere. "Electrons flow from Negative to Positive. This is called Electron flow. Originally it was believed they flowed from Positive to Negative. This was later found to be ...
user2716454's user avatar
  • 1,185