Posted on 09/15/2022 6:13:43 AM PDT by Red Badger
Weewhacker
Pervert.
How's your chainsaw handle 2' diameter oak? My Husqvarna devours it.
“How’s your chainsaw handle 2’ diameter oak? “
Fine. The oak I took down was 12” diameter. I even chewed up the stump 6” below ground level.
Your lawn and duties must be small. This is the only way to survive using an electric lawnmower. I used one and it was pathetic for my green lawn outside It moved much too slow.
Am I slave to my lawn and the fruit trees? Yes.
“It moved much too slow.”.
Mine moves as fast as I can go.
“Your lawn and duties must be small. “
I take it that you are no longer claiming “Bull ...”?
“I used one and it was pathetic for my green lawn outside It moved much too slow.”
My former gas mower moved too slow for me. What model did you use.
Like gas moweres they come in different flavors. I am sure that there are gas mowers out there that would not meet your needs.
Mine is 80v and came with two batteries. Works fine on a residential lawn even when overgrown.
I have a 166cc or so Troy Bilt. What is your electric lawnmower?
I was curious about the electric you used as some are marginal.
I have a Kobalt 80v 21” “push” mower.
“Your lawn and duties must be small.”
Not that big. One battery does the job. But for bigger lawns, you can start with two charged batteries and when one is depleted use the second one while charging the first and keep going all day.
TG I cannot say. This was 8 years ago so I cannot remember the battery powered lawnmower model. I bought at HD and returned it 2 weeks later.
I use a gasoline powered self propelled lawnmower. But my other trimming tools such as chain saw, edger and string trimmer are electric. Via extension cords. The battery string trimmer I have is too under powered.
” This was 8 years ago “
I bought mine five years ago. That was the time I remember thinking battery powered would be adequate.
Eight years ago I would agree that cordless mowers were inadequate for all but the tiniest yards.
I bought my cordless trimmer 8 years ago. My corded edger is hanging on the wall, unused for 8 years.
“The battery string trimmer I have is too under powered.”
Sometimes I have to go a little slower to edge the fast growing St. Augustine but it is worth it to not fuss with the cord.
But I am running 18v and 0.065. I want to upgrade but the dang thing won’t die. 8 years of weekly use and no battery degradation that I can notice.
Kobalt has a 80v 0.080 model that uses the same battery as my mower! It would be quick but the battery is heavy.
You are the FR motor man (or one of the top 5) so I give up today and have a nice one is sunny Florida. By FR motor man I mean dinosaur petro and electric and EV and so on.
Lithium-Ion Batteries are a nightmare for fire fighters.
Best guidance is NFPA855 for charging and saftey.
While operating routinely, everything is fine. It’s the abnormal events which are killers.
Look at the MacMicken Fire incident near Phoenix from 2019
https://commercialsolarguy.com/a-lithium-ion-battery-burnt-four-firefighters-were-knocked-unconscious-a-timeline-and-recommendations/
Happened on a 2MW BESS, but only involved 1-3 modules.
Battery cells were maintained by professionals and less than 2 yrs old.
One battery cell had a dendrite growth between the cathode and anode tape, with the tip shorting out one cell. Cell short circuited and began to outgas, then went into thermal runaway, cascading failures to adjacent cells.
Container system sensed a rise in temperature from 70s to 90s, then activated, opened all circuits, closed all ventilation, activated a clean agent system, but the solid chemistry exotheric reaction couldn’t be stopped.
Went on for a couple of hours, first responders donned SCBA, and sensed the area IR, found the point of thermal source. Waited for it to die out, then opened to make sure it could be made safe. Made about 4 trips in and out of the Container. On the last trip, they heard a pop, then a deflagration event so quick, the flames shot about 74 ft ;atterally and 20 ft high out the door. It propelled the Fire Chief through and out the bottom of a chain link fence, landing him in a burning bush about 73 ft away, and crushed all their SCBA facemasks. All 4 firefighters were hospitalized, but not died.
NFPA 855 now requires water sprinkling, but still only really triggers at 20kWh ESS systems. 1kWh Li-Ion systems tend to fall under UL listed systems and allowed in the IFC, IRC, and NFPA855, even in 1 and 2 family dwellings, except in their living and sleeping areas. Only require 5 ft standoff from doors and windows, if mounted outside the building and can be as large as 2 - 20kWh ESS EV Mobile systems.
Here’s the nightmare. Large cities and retailers pf the bikes and scooters, tend to have rental businesses set up, where users can rent and use the bike for the day, then come and switch bikes for a newly charged system.
The rental business frequently subcontracts out to locals and pays by the battery for them to recharge them. When the companies recharge, they may have a van or truck running around swapping the batteries and returning to an underground parking garage with 60 batteries on board, plug large elec conductors into their vans, and recharge at night in the garage, with several other vans in parallel.
Codes really aren’t prohibiting this.
For Li-Ion batteries when they go into thermal runaway, they can jump from 200deg C to 300deg C in 1 sec, and their flame temps can reach 1000-1500deg C. So they will melt most items beneath them, except concrete.
One cell can generate 5cuft of outgas smoke, which is highly toxic and explosive/flammable. (.5 ppm can cause permanent lung damage).
One fire in Belgium used 990,000 gal water to mitigate heat hazards to adjacent bldgs.
New codes, don’t allow firefighters nor tradesmen to enter the container once the Fire Alarm system has been activated. Must be all automatic, with documented destructive testing of a sample system and full commissioning.
FWIW, don’t use those tool batteries like a mallet.
<;^O
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