Help! DeWalt 28v nightmare (DC351 Plunge rail saw; DE9280 batt)


#1

Hello gents,
made double clanger:
1-Bought absolutely wrong saw
2-Second hand…
Works only so so… neither accuracy is satisfactory, neither the supplied battery lasts more than few cuts…
looked everywhere for battery- turns out whole 28v and 36V range has been killed off.
Found Second Hand battery and charger in US- doesn’t ship to UK, still looking and thinking would, if I would get such, to make plug in option using charger as an extension lead (US 120v works perfect on UK 110V site standard power tools), just a question that charger (28-36v) rated 3A 123VA- to use with bottom shell of a battery as an adapter…
would it work gents?
also, found supplier of 36V battery (at a great expense), would that be killing the motor on a saw?
Thanks for ideas in advance!


#2

It would all be cheaper if you just tried to buy the FlexVOLT tracksaw. That entire 28 volt line is dead as a doornail, same with the old 36 volt. They don’t even use the same pin out. As much as you think you got a deal buying second hand, for dead lines like those, you’ve probably spent more trying to find working systems than just buying the FlexVOLT. It’s a full-on 60 volt platform (so, it’d be a 54, compared to the 36 and 28.) so it has plenty of steam to handle what you’re doing.


#3

You do make sense, unfortunately.
Still, thinking of some/any way to salvage something out of it or to make it usable for a little while …


#4

Well, I understand the frustration, but I’ve seen this exact issue before. It always resulted in the purchase of a totally different track saw. Yes, if you have some electronics experience, you could in theory build a transformer circuit to convert your local AC into 28 V DC, and splice the output to the positive and negative leads inside the battery compartment, then remove the batteries and have a full blown AC version of the saw. But, at the same time, you’re risking fire if you do this. That’s not slang for trouble in this case, I mean FIRE. Since the AC/DC converter would produce more heat than the battery ever did. Put that near wood, and you’ve got a fire hazard.

I REALLY want to say this would work, and that your major score in a second hand saw was worth it… but the reality is, that tool is usually so expensive that nobody lets one go without a good reason. You got snookered in the deal here. You bought something from someone who KNEW it wasn’t going to work, ever. Compare all the money you’ve spent on it, with the cost of buying the UK edition of the FlexVOLT Track Saw. You’ll see for yourself.


#5

Yes, it appears so…

On the other hand A123 cells are cheap (relatively) to replace
http://www.candlepowerforums.com/vb/showthread.php?185348-Dewalt-A123-cells-28v-and-36v-packs
Would make sense to get US charger and dead battery to revive the whole thing


#6

Really set myself on solving obsolete battery situation.
Few times worked with it (each time until battery dies) so far,beginning to like it :stuck_out_tongue:
(I presume, since fitting is physically identical(?) )
Q1 : 36V and 28V tools/batteries compatible/interchangeable? both use DE9000 charger… (found battery and charger in 36v, that ships to UK)

Q2 : anybody would have knowledge of the saw DC351 actual power draw figures? still thinking in pros and cons in using battery shell, with battery charger as power source connected to the saw from the mains via battery shell)

Q3 : found (28v Li-Ion) tool with batteries and US voltage charger cheaper option, than trying to “revive” DeWalt 28V system. could I use different technology batteries (and charger), if to fit in to the shells of old non working DeWalt batteries, where capacity is almost identical . DE9280 is 28v 2.2Ah 62Wh “Nano”, vs, 28V 2.4Ah 68Wh in way smaller size factor (clearly physically would fit in a shell)

Thanks gents!


#7
  1. No. Both systems were taken out of the line for failing to function properly, not because they got “Aged Out” like the old NiCD families were.

  2. No. Those specs are no longer available on the DeWALT site, and all support for them has stopped as well.

  3. No. For the same reason you can’t use a Milwaukee battery in a DeWALT tool, you can’t use a different battery system for this track saw. The heat loss for converting AC to DC on these tools is too much for the housing, and other battery platforms use a very different pin-out to control the power flow, and read the charge of the battery.

You may be REALLY into reviving this saw, but you have picked one of the greatest failures DeWALT has ever put out in order to do so. You are COMPLETELY setting yourself up to fail, or kill yourself trying.

I’m sorry. I really am. But, put honestly… You could do what you are asking better with pretty much any OTHER Saw out there. The DeWALT NiCD 28 and 36 volt lines were a total failure, and cannot be saved. They were junk when released, and are junk now. And I say this as someone who is completely invested in DeWALT tools. I’m not trying to sell you something, or insult you, or anything like that. But,I’ve seen many comments on the Facebook page, asking to do exactly that. Every. Single. One. Failed. The Saw overheated, or there was intermittent power, or the power transformer was just not up to the conversion, and melted either itself, or the housing, or both.

You, sir, are tilting at windmills, I’m afraid.


#8

thank you!
PS those are Li-Ion batts


#9

My apologies, it was late when I typed that, and I was tired. Yes, they were Lithium Ion… EARLY Lithium Ion. They got them to work better later on, such as the MAX/XR and FlexVOLT family, but these 28/36V tools were deeply flawed.

Like I said, had you ventured into this on almost any other saw, you’d probably be done by now. But you hit a VERY bad saw for these things. It’s the Saw, not you. All the searching you’re doing for batteries and chargers from around the world… Honestly, just buy a FlexVOLT from the UK. Save your money, sales should be coming up like crazy soon.