![Thanks](https://www.renovateforums.com.au/dbtech/thanks/images/thanks.png)
![Likes](https://www.renovateforums.com.au/dbtech/thanks/images/likes.png)
![Needs Pictures](https://www.woodworkforums.com/images/smilies/happy/photo4.gif)
![Picture(s) thanks](https://www.ubeaut.biz/wave.gif)
Results 1 to 4 of 4
Thread: Battery Substitution
-
21st January 2022, 06:58 PM #1
Senior Member
- Join Date
- Jan 2005
- Location
- Campbelltown NSW
- Age
- 78
- Posts
- 68
Battery Substitution
About nine years ago I purchased an 18V Aldi 3 piece pole hedger. Recently it has been playing up and only running for around 20 seconds before cutting out. Given its age I suspect the battery is end of life. Making enquires Aldi have changed their battery design so that is out. Maybe a repack then? Nope, dead end there too.
Ok, I have some 18 volt Ryobi garden tools and batteries, I’ll splash and buy a new one. I go down to the purveyor of these tools and on trying it out it was so long and heavy that I couldn’t control it well enough to be safe.
Back home I mulled it over as to how could use a Ryobi battery. I had a couple of dodgy designs before coming up with this solution. The problem is how to secure the battery. I had a spare Ryobi charger which secures the battery. I isolated the electronics in that, stripped the batteries and electronics from the Aldi battery box and ended up with this. It ain’t pretty but it works.
BDB12DD7-81FB-477D-920E-4B5A8908B164.jpeg 118176DE-7169-4F0B-989A-BC3F50F6D9B3.jpeg 9DAD5500-B7B9-4143-83D3-47CEBC76E50E.jpeg
-
22nd January 2022, 09:01 AM #2
-
24th January 2022, 11:58 PM #3
SENIOR MEMBER
- Join Date
- Jan 2003
- Location
- Osaka
- Posts
- 346
Don't know if this helps, but I recently bought a secondhand Bosch cordless drill. After it arrived, I put the battery in, pulled the trigger, seemed to have plenty of power, so put it away.
Last week I dug it out to see how long it would run. About 2 minutes before it cut out. Spare battery was better, but not much. A bit miffed, I downloaded the manual to get an idea of the specs, charge time, etc. Found a section detailing what to do when the battery is stored for a long time - and noted the symptoms would be similar to what I had, short charge time, short run time. Procedure says to run the battery FLAT, then charge. Rinse and repeat 5 or 6 times. (of course let them cool between steps)
At the end of this, I get about 30 minutes of runtime, and charging takes around 35. A bit down from new, but more than usable. These are NiCds, so similar procedure might apply if yours are too.Semtex fixes all
-
25th January 2022, 12:49 AM #4
Senior Member
- Join Date
- Jan 2005
- Location
- Campbelltown NSW
- Age
- 78
- Posts
- 68
For NiCad batteries that sounds like procedure for avoiding NiCad memory effect such as you described. My battery was a Lithium Ion and I suspect given its age that one or more cells were failing under load.
Lithium Ion batteries can also suffer from a problem where they won’t charge if the voltage falls below a certain threshold.
Similar Threads
-
can i charge a dry battery with a wet battery charger?
By weisyboy in forum NOTHING AT ALL TO DO WITH RENOVATIONReplies: 2Last Post: 5th April 2009, 10:24 PM