These batteries any good for my 18V Tools?

Joined
22 Nov 2018
Messages
1,800
Reaction score
30
Country
United Kingdom
Thinking about the power stack or flexivolt for my 18v dewalt tools
20250219_172419.jpg
20250219_172358.jpg
20250219_172410.jpg
 
The higher amp hour dewalt batteries are well regarded for high draw tools like circ saws etc even though the voltage is the same. Not sure how that works with these lower current devices
 
any dewalt battery will work any dewalt tool
newer higher power 18v tools can get access to 2x18vgroups off batteries on the flex volt or from the new powerstack batteries they still work on the old batteries but for example 1200w 999 drill may only reach perhaps 950w

if you shop around you can get the old 4 and 5 amp for £10-11 per amp [40-44and 50-55] you shoud avoid above £12 an amp[4=£48 5=£60]

and iff you go to ebay or other internet emporiums you will see what looks like cheaper dewalts but they will be clones unless the word dewalt is printed on the battery so avoid "for dewalt
 
Last edited:
Not owned dewalt but if you're looking at batteries, do shop around. I have Makita and you can get the batteries significantly cheaper than toolstation and screwfix. I use powertoolmate or powertoolworld for my stuff.

+1 to big-all advice. Avoid "for xxx" like the plague. Amazon is full of them and the genuine batteries are cheap enough these days it is stupidity to take the risk. Lithium fires are vicious so don't risk it.
 
a company i use
 
a company i use

Good price. Want you think of powerstack and flexivolt 54V?
 
I took a chance on a couple of non genuine Makita replacements from Amazon, to my surprise they're still going strong 3 years on and and definitely last last longer than the originals.
 
Good price. Want you think of powerstack and flexivolt 54V?
flexvolt had them for year great idea 18 or 54v have 5 flexvolt 6 amp and one 9ah in general used for the table saw or plunge tracksaw as 54v as i have plenty 18v i will only use a 18v on a 54v battery for other reason like tool will stand /sit /balance in hand better with a larger battery on or just because it looks stupid on a small drill /tool or light
dont have any powerstack as i have excessive amounts off batteries all ready and amps per £is 30-50% less than a traditional battery
 
Last edited:
flexvolt had them for year great idea 18 or 54v have 5 flexvolt 6 amp and one 9ah in general used for the table saw or plunge tracksaw as 54v as i have plenty 18v i will only use a 18v on a 54v battery for other reason like tool will stand /sit /balance in hand better with a larger battery on or just because it looks stupid on a small drill /tool or light
dont have any powerstack as i have excessive amounts off batteries all ready and amps per £is 30-50% less than a traditional battery
Oh ok. Can you use fiexivolt 54v on 18v tools?
 
Oh ok. Can you use fiexivolt 54v on 18v tools?
yes they have 15 cells in 3 groups off 5 giving [5x3'6v=18]18v connect the 3 groups via the 2 contacts gives you in parallel so 18v 6amp
the 54v chose different contacts which means all the batteries are in series one after the other [15x3.6=54v] so 54v but now at 2 amps

for years the 6amp batteries where £88 and can still be bought around that on odd occasions but are overpriced if you just want 18v as at £10-11 per amp should be £60-66 but worth it iff you have your eye on 54v
 
Last edited:
yes they have 15 cells in 3 groups off 5 giving [5x3'6v=18]18v connect the 3 groups via the 2 contacts gives you in parallel so 18v 6amp
the 54v chose different contacts which means all the batteries are in series one after the other [15x3.6=54v] so 54v but now at 2 amps

for years the 6amp batteries where £88 and can still be bought around that on odd occasions but are overpriced if you just want 18v as at £10-11 per amp should be £60-66 but worth it iff you have your eye on 54v



Maybe get this for my 18v drills circular saws etc (last forever) normal charger should suffice

 
Yes that's exactly what I paid about 3 years ago as the previous price was something like 150 160 so quite a drop
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top