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Battery will not hold charge

The battery used to hold a charge that lasted long enough for me to trim my entire I can barely complete one section. (Used to trim for almost 20 minutes and now I get about 5 out of the "fully charged" battery) I still am sure to charge it overnight but it seems to only take a certain amount of charge. Even when I first start the trimmer, it seems to run lethargically!!!

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  • 29 Answers

You need a new battery. It is possible that the battery may be fried.

Posted on Aug 20, 2017


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Posted on Jan 02, 2017



  • 2 Answers

SOURCE: CST1000 Black & Decker Cordless Trimmer/Edge won't start

Part number #243614-00.
It's a microswitch made by Honeywell that costs about 5 bucks plus shipping.
The attached file has the schematic and parts list.
The CST2000 is well worth spending a few bucks to keep it going. Finding a local B&D authorized service center near you will even save you the shipping as they can order it for you.
Every other component is pretty dependable- the motor, battery, wiring, charging system, spool system- all built to last.
Only down side is you really only get 20 to 25 minutes of hard weedwhacking before you need to recharge. Of course, it's time for a cold beer in the pool by then.

Posted on Apr 24, 2008

Laura Larsen

  • 36 Answers

SOURCE: grass hog 18v nst2018 trimmer

After reading all of the reviews on, it seems these batteries require charging and discharging 3-5 times before they hold a full charge.

All of the reviews mentioned this; they said it lasted 5-10 mins the first few times, but then they suddenly got 30-50 mins per charge after the 3rd to 5th charging.

Posted on Sep 19, 2009

Tim Whalen

  • 3074 Answers

SOURCE: bought unit last year...when charging

sounds as though the battery needs replaced, can check and see if it has a warranty on the battery. Hope this helps Tim

Posted on May 01, 2011



  • 3018 Answers

SOURCE: 1. Battery charger blinks

  • Either your charger is malfunctioning or your battery is just at the end of it's road. One thing I can tell is the battery is not getting a full charge or is not holding a charge like it should. What happens is that the battery is not pulling it's weight so under a load the trimmer cannot hack it. Picture a car that has lights and radio but won't turn over because the battery is good enough to run a dome light or radio (as the trimmer spins) but won't start the car (trimmer won't function under a load). A blinking light traditionally means the connection itself is bad between the battery and the charger. Like the battery is not quite set right in the charger itself.

  • So check to make sure none of the tabs on the battery or charger itself did not got a little bent effecting the connection.
  • Try positioning a little more to one side of the other and see if that helps.
  • If you have had this trimmer for a while then the battery would be the first thing I would replace. If you have a neighbor of a friend with the same trimmer you may try your battery in their charger and see how it fairs. But if you try everything I listed above it kind of narrows it down.
  • The charger is a standard 18 volt quick charger should you need to get one of those but I suspect in the end a new battery will fix your problem. Fast charge on batteries is convenient for us but the batteries that are quick charged die a quicker life.

Regards, Tony

Posted on May 09, 2011


  • 207 Answers

SOURCE: I used my Worx trimmer

Your battery is shot. I had one of these, the batteries are really cheap and don't last long. If you can afford it, ditch the Worx and buy a quality trimmer at your local hardware store. If you are short on cash you can buy new batteries online.

Posted on Jun 06, 2011

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Where can the harness be purchased reasonably priced?

Best is a salvage yard.

If you havethe time and a voltage meter with Aligator clips,

I have removed wiring harnasses then

1. Disconnect battery

Wire brush male connections.

2. Trime a nail file to fit in female slots and clean with file

3. Connect Resistance meter (I prefer those that sound off when a connection is present) to both ends of wire,

follow each wire inspecting for cracks in insulations or worn areas, bend stretch and twist as you run the length of the wire. If the sound from the meter stops or needle moves. you found the bad wire or break in the wire.

I then replace the entire wire some just remove the bad area and splice wire together.

For splicing,

Cut and trim wire,

slide electrical shring wrap (one inch each side of splice length)on wire away from bare wire,

press wire together


If in car cover area around wire with aluminum foil

Flux the bare wires

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It is only time and this process is easy when done on a junk yard harnass then when complete, install in the car.

I mark the wires with a paint pen when they check out ok.

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Well your battery problem is quite simple. Litium batteries have a life and as the cells deplete, they will not hold as much charge as they once did. The part number for your unit is Worx WA3512.1 and can be purchased for about $53.00. As far as the spool retainer clip is concerned, you will be looking for a hard to find part. Here is the good news, you can purchase a brand new WORX GT WG150.1, which is the model you currently have, for only $95.00 on Amazon. I hope this helps you and let me know if I can be of additional assistance.

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Most cars now have many modules that incorporate "memory" systems that require a constant low voltage supply, including your radio. Most batteries will hold enough charge to last a month without going completely dead. Not sure what you consider "extended period".
If storing for more than a month, you could either put a 2 amp "battery tender" on it or disconnect the battery (but you need to know how to re-arm the security system so when re-connected it will start).

If the battery is going dead in a short time (two weeks or less) have the battery load tested after getting it fully charged. It may be good enough for day to day use but if it's not in really good condition it will get low quickly.
If you have a drain that's unusual, that will require going through the entire electrical system fuse by fuse 'till you find the drain source. At this point it can be so many things that commenting is foolish as testing is the only way to verify anything.

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How long should trimmer run on a charge.

How large is your yard? On a small yard (like a townhouse front & back yard) the trimmer should last long enough to do the yard a couple of times before needing to be recharged, but it depends on the individual yard, how many weeds you have, and whether you keep it running a long time.

If the trimmer charges at all but not for a very long time, it's either the charger or the battery. Check the charger when it's charging to make sure the red light stays on -- if it goes off or blinks, you need a new charger. If the charger light stays on but the battery doesn't hold a charge, you need a new battery.

Hope that helps!

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Won't hold a charge

what rechargeable batteries are you using and what's your method of charging?

If your using a dock for charging - make sure you have the battery pack kodak kaa2hr otherwise the dock won't charge it

if you're using a separate charger - it's ok to use other AA ni-mh

please check the age of your batteries as well.. batts, even rechargeable eventually wear out - they can last up to 300 charging cycles and a year or a little more than that is enough for you consider buying a new set

if you say that you barely use the cam, batteries still deteriorate through time

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