Posting a message to the forum will remove the above advertisement
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. angel While you're here, would you mind checking out our Electrician's Insurance section to see if we could save you a few quid? - Specifically our Van Insurance Deals and Public Liability Insurance Deals. Thanks for supporting the forum! angel

    5% Discount from Electrical2Go.co.uk for ALL members! - Click Here

Discuss Replacement DeWalt Battery in the Electrical Tools and Products area at ElectrciansForums.co.uk.

Please make sure you checkout our forum sponsors, many do discounts for members and, they keep the forum free to use.
  1. littlespark
    Offline

    littlespark Electrician's Arms

    Location:
    Scottish Borders
    My little yellow friend, Dewalt 18v combi drill has a broken battery. It wont charge.
    Its been going for a good 5 or 6 years now, but neither battery holds charge well.
    A quick look online gives prices of round about £100 per battery for a genuine replacement. I'm going to look at the sources Pirate mentioned on another thread, but in the meantime, I have a question.
    I can get unbranded knock-off batterys for £40 for 2 from a popular online department store that I may have a £20 voucher for. Does anyone know how good these are? Will they be as powerful as the genuine dewalt? Are some knock off brands better than others?
    The battery in question is DeWalt 18v 2.6Ah NiMH model number DE9503

    Further question. I only think the battery is faulty as the charger flashes quickly indicating a fault. Is there something inside the battery that can be repaired?
     
  2. pirate
    Offline

    pirate Regular EF Member

    Location:
    Glasgow
  3. littlespark
    Offline

    littlespark Electrician's Arms

    Location:
    Scottish Borders
    Looks like the ones I saw on am*z*n. I’ll have a good look round before purchase, I still have 1 good battery.
    My father in law has the same drill that he never uses. Might need to swap over my batteries for his next time I visit
     
  4. 123
    Offline

    123 Electrician's Arms

    At £100 for 2 Nimh batteries - it might be money better spent on getting a new drill with Li-On Batteries.
     
    • Agree Agree x 4
  5. Phil Thompson
    Offline

    Phil Thompson Let us light up your life! Electrician's Arms

    Location:
    Newtownards
    Business Name:
    Brite Spark Electrical
    You’ll get a 5ah battery brushless combi hammer drill and charger for £159 or less, which would almost equal your 2x2.6 batteries, but the brushless should use less power, so drill for £59 basically.
    Other options I saw are
    With a 9ah for £279 or less
    Or x2 5ah for £229 or less, that was just on a quick search.

    Various kits available too.

    Be more economical imo, plus options to buy body only for other items down the line.
     
  6. littlespark
    Offline

    littlespark Electrician's Arms

    Location:
    Scottish Borders
    Thanks everyone for suggestions, but i'm on a mission now to mend and make-do.
    Both of the batteries are giving a reading of over 19v on my multimeter, but when plugged into the drill, the faulty battery gives no life at all.
    These particular batteries have a 3rd contact between the 2 main contacts. Reason? Could that be what tells the charger that the battery is broken?
    Shield the contact and fool the charger into thinking the battery is ok and charge it, or could that cause a major problem (boom!)

    Maybe one of the contacts isn't connecting when plugged into the charger?
    I'll keep you posted on how things go...
     
  7. HandySparks
    Offline

    HandySparks Trusted Advisor

    Location:
    Hampshire
    Business Name:
    Neish Electrical Services
    The 3rd contact on the battery is likely to be for a temperature sensor in the battery pack which will stop the charger fast charging when it gets too warm.

    If you're still using NiMH batteries, I'd be inclined to look for a new Li-Ion tool set with batteries and charger at a good price.
     
  8. Andy78
    Offline

    Andy78 Trusted Advisor

    Location:
    Kingston upon Hull
    Could be a problem on the drill PCB ? Have you tried other batteries in the drill ?
    Sounds like a mission that will not be cost effective in the long run.
     
  9. littlespark
    Offline

    littlespark Electrician's Arms

    Location:
    Scottish Borders
    The drill is fine. There's 2 batteries in the box and one works perfectly. Other one just will not charge.
    The fact that both read full voltage on a multimeter has me stumped.
    That's why I think its a connection problem. Theres power there, just not getting through to the drill when plugged onto it
     
  10. pirate
    Offline

    pirate Regular EF Member

    Location:
    Glasgow
    I hate retiring stuff...but sometimes it's the only way to go. Yes, you can get new batteries at a reasonable cost, but maybe it is time to wrench yourself away and take a new route? I hate it, myself...stuff going to waste, but usually after I take the jump, life is better!
    Thus, you have a source of new batteries, but the cost of upgrading makes sense as you will be on a newer platform...
    Took me 5 years to change from my trusty Ferm 24V bargain to the DeWalt Li=ion 18V, but I have to say the transformation was amazing.
    Just my thoughts...
     
  11. littlespark
    Offline

    littlespark Electrician's Arms

    Location:
    Scottish Borders
    Why would you???
    Price comparison on one genuine DeWalt battery;-
    Pirates link from post #2 ---> £49
    Popular online store that's named after a river ---> £98
    My local 3 letter electrical wholesalers ---> £129!!! and that's without VAT

    My budget isn't going to stretch to a new kit this month, or next.
    False economy, but I might just get a £20 non branded just now and see how it goes.
     
  12. SWD
    Offline

    SWD Gender neutral Electrician's Arms

    Location:
    London
     
  13. SWD
    Offline

    SWD Gender neutral Electrician's Arms

    Location:
    London
    I tried the above on some standard Dewalt Battery 24V do a search on YT
     
  14. rolyberkin
    Offline

    rolyberkin Electrician's Arms

    Location:
    Chelmsford
    There was someone on another forum that had a generic replacement battery go up in smoke (not even on the charger!). Personally I would stick with genuine but shop around.
     
Loading...
Similar Threads - Replacement DeWalt Battery Forum Date
Like for like replacement and MWC Electrical Forum Tuesday at 10:37 PM
PIR registration and CU replacement Electrical Forum Oct 7, 2018

Share This Page

Users found this page by searching for:

  1. dewalt replacement sensor for battery

Electricians Directory Post a Domestic Job Post a Commercial Job