New cordless tool batteries inbound

[RageNR]

Not sure if this has been mentioned or not, but both Ryobi and Milwaukee are planning to release 2 new 18v batteries.
There will be a 6.0Ah and 9.0Ah pack. The 9.0 pack adds another row of 18650s for 5s3p. 6.0 will be standard format 5s2p.
Just 3 of the 9.0Ah batteries in series will be 54v (63v charged) with 162Wh each for a total of 486Wh. Wow...
Should be released this fall.
http://toolguyd.com/milwaukee-m18-6ah-9ah-batteries/

I know tool batteries are not the best option, but there are some of us out there that appreciate multi-use gear.
Recently, I experimented with 3 of the Milwaukee 18v 4.0Ah packs on my 3000w Cyclone kit just for kicks. Not a lot of capacity, but propelled me to 43mph.
For something that I can put to work all day, and let me play late into the night, using your already paid for tool batteries is reasonable.

Now if Ryobi can bring those 6.0Ah packs in a $100 2-pack, that will make it a very compelling buy for me. Just need to find a way to made a good connection to the terminals and prevent overheating.
The tops of 2 of my current Ryobi 18v 4.0Ah have melted while being used in my tools. Namely, the angle grinder. Prob due to poor connection design.
That is why I used the Mil packs on my bike. They have a far superior connection.
If you've got any cheap brilliant ideas, thrown 'em down. I've tried the screw head setup. Did not like it.

 

[spinningmagnets]

I'm surprised that there aren't any examples of RC power boards / mountain boards using cordless tool batteries. 18V, 24V, 28V, 36V...a system that uses a battery that can be purchased at any large hardware store, and comes with a warranty? I would use these just to transfer the liability to some other company. Without the battery or charger, there's no part on a power board that's dangerous (other than crashes...here I'm talking about home fires)

I love my Makita cordless 18V drill, the batteries are safe and they have a plugin-and-forget charger

 

[craiggor]

B&Q UK diy store had these 36v 4ah batteries on offer at £34 each with a charger.

I made connectors for them using kitchen chopping board.

 

[Edirtbike]

this seems like a great idea. Can you show a better picture of the cuttingboard connector? Dual use batteries!

 

[wompus]

These look great to me: http://www.dewalt.com/products/accessories/batteries-and-chargers/batteries/20v60v-max-flex-volt-60ah-battery-2pk/dcb606-2

They are dual configuration with an internal switching system, either 5s3p or 15s1p. Currently using 2AH cells, there should be a version using 3AH cells coming soon.

I have ~ 1000miles on 6 x 4AH packs with no issues. The flexvolt will be a bit better, but my only issue with my current setup, is that the 6 packs in cases with mounting/etc is a bit bulky.

 

[misterb]

pricing on these looks nice:

original thread credits:
https://endless-sphere.com/forums/viewtopic.php?f=3&t=78773
https://endless-sphere.com/forums/viewtopic.php?f=2&t=82461

24v 2ah @$20
http://www.lowes.com/pd/Kobalt-24-Volt-2-0-Amp-Hours-Lithium-Power-Tool-Battery/1000061657
24v 4ah @$50
http://www.lowes.com/pd/Kobalt-24-Volt-4-0-Amp-Hours-Lithium-Power-Tool-Battery/1000061179

You can always get a 10% coupon from ebay as well. I'd rather use higher capacity packs, but the price is nice on the 2ah version. I'm working on a way to build out a connector rail to make some 48V packs (8ah--4 x 4ah packs, or 10ah--10 x 2ah packs).

 

[skeetab5780]

The problem with the Milwaukee is the price. I am an authorized distributor and I pay over $100USD for the 18v 5ah packs...So when they do come out with a 9ah pack it will probably be about $200. So $800 for a 72v9ah battery?!?! Then you have to do all sorts of work to throw them together. Not so much

Now I can see using one or two in their original form for warranty purposes. But I would personally never do that.

 

[craiggor]

this seems like a great idea. Can you show a better picture of the cuttingboard connector? Dual use batteries!

wooden prototype shoots off battery when release pressed.

 

[wompus]

I like it. Someone with a 3D printer could easily make something similar and easier to replicate.

 

[craiggor]

I like it. Someone with a 3D printer could easily make something similar and easier to replicate.

Yes,I made mine with a hacksaw and razor blade.I was tempted to modifiy two of the chargers,but I thought I would be better off with the chargers in different locations.Two 45 miles away and two 75 miles

away.

 

[craiggor]

These look great to me: http://www.dewalt.com/products/accessories/batteries-and-chargers/batteries/20v60v-max-flex-volt-60ah-battery-2pk/dcb606-2

They are dual configuration with an internal switching system, either 5s3p or 15s1p. Currently using 2AH cells, there should be a version using 3AH cells coming soon.

I have ~ 1000miles on 6 x 4AH packs with no issues. The flexvolt will be a bit better, but my only issue with my current setup, is that the 6 packs in cases with mounting/etc is a bit bulky.

I have 2200 miles on my 6 Mac Allister 4ah in a year and a half.I was told on the pedelecs fourum small battery bargain thread that you could take the BMS off one battery and join to another to make one 8ah.

I wanted to do this to slow the charge rate down.I decided against this due to the batteries been under a 2 year warranty.I may do this when it runs out.I could then get rid of the cases to save weight and space.I do like the protection the case offers though.

 

[scrambler]

New EGO batteries up to 56V x 7.5 Ah
http://egopowerplus.com/products/56v-lithium-ion-7-5-amp-hour-battery

 

[markz]

I just found the Dewalt Flex Volt batteries.
They look very interesting.
I am like Spinning Magnets, I am tempted to buy batteries from Home Depot, but the prices are more expensive.
But they are much better quality and the warranty factor.

 

[spinningmagnets]

I bought the "so called 56V" EGO weed wacker (string trimmer?) and I can verify its 14S, nominal 50.4V, and 58.8V fully charged.

 

[nutnspecial]

What AH did you buy? Have you tested the discharge capability/limits?

I'm keen on the echo brand 58v 4ah. Seems they go for 70- 100$ on ebay, but have seen 2x w/ no warranty for as little as 100$. I read their bms's can handle up to 30a bursts, making them an ideal 'entry' battery for a small ebike <1kw.

 

[skeetab5780]

So I finally got around to talking to my Milwaukee rep and he is telling me the new 9.0ah battery pack is going to be $169.00 my cost as a distributor. Not to too bad. So the price point of $189-199 sounds about right to the consumer.

 

[skeetab5780]

They are finally here!!!

 

[Edirtbike]

Thanks for the pics of the plastic cuttingboard battery case 'craiggor'.
Still hard to see what your metal connectors are made like though.
The plastic is a great idea because it's easy to shape with cutting tools and maybe also use a torch to shape as well.
Wood is also easy to shape with dremel tools etc.
The ability to make a snap and lock in case for it to mount on the bike is good and also lets you be able to use the batteries in power tools still.
I saw an amazing new dewalt battery technology with a series choice of 20, 60, or120V in one pack and 9.0ah at 20Vs capacity.
That means only 3.0ah running at 60Vs, but with two or more made to connect in parallel running a 3000W cyclone motor might be a good setup. Then take them out and use them at work all day and recharge on the jobsite while being able to monitor them, then use them to drive home.