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PostPosted: Fri Dec 14, 2018 2:40 pm 
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for the attention off job and knock :lol:
just tried a 5ah battery in a fast charger 36 mins from flat

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PostPosted: Fri Dec 14, 2018 4:22 pm 
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So what you are saying is that DW has finally, after 12 or 13 years, caught-up with Makita..... :roll:

Was that on a discharged battery which had been allowed to cool down by any chance? I note that in a previous duscussion you referred to having to allow 20 minutes or so for a hot battery to cool down before it was charged. The DW charger I have (which admittedly is about 3 years old) won't do it anywhere near as fast - and it was supposedly the faster charger back then. Does your DW charger have a fan in it? The reason I ask is because without it the charge cycle (which generates heat itself) will end up being extended while the charger waits for the battery to cool down - in the case of the two fast Makita chargers (DC18RA single and DC18RD double) the fan runs all the time during the charge cycle so even if you plonk a warm, discharged battery onto the charger it will still cool and charge within the time stated by Makita. Or in other words, having both systems in real life, on site, the DW is markedly slower (from removing from the tool to replacing on a tool after charging) both in my own experience and that of several colleagues I've discussed this with

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PostPosted: Fri Dec 14, 2018 5:14 pm 
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it was the last times i quoted where from the booklet that came with the charger as in 4ah 60 mins 5ah 75 6ah 90 mins on that router thread in another forum :lol: :lol:
i just wanted to update you that they had progressed and the dcb118 fast charger now this charger may have been available from 2011 with the new xr range or more recently i dont know as i have only converted from the plug in to slide on batteries approaching 2 years ago

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PostPosted: Fri Dec 14, 2018 7:33 pm 
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I don’t use the fast charger much. I have a charger that slowly charges and my batteries have lasted way longer than before. The fast charger seemed to give me a much lower life span on my batteries.

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PostPosted: Fri Dec 14, 2018 7:41 pm 
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yes first time i have used the fast charger as i dont like to "cook" the batteries :lol:
it was because the booklet suggested the 15 mins per ah charge time regardless off charger wasnt right so went out and tried it hence the experiment with a 4ah next lol

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PostPosted: Fri Dec 14, 2018 11:46 pm 
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But as I said, I don't think you have taken into account the temperature of the battery at the start point. If I've just flattened an 18 volt battery doing something like grinding, recip sawing or chisselling it'll be a lot hotter than if I've discharged it by using a combi drill to produce pilot holes. Also, how do youy know that the battery is fully discharged? In other words I'm suggesting a level playing field

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PostPosted: Sat Dec 15, 2018 12:25 am 
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ive got a canny few ewalt batteries and chargers. none have fans in so must not be a dewalt thing. mostly i need a full battery so go and find em all on 1 bar coz ive been rubbish and not charged any of them. then ill be :angryfire: :angryfire: :angryfire: :angryfire: and have to wait a while, time to hoy the kettle on or go chat to the sarnie shop girl for a bit :lol: :hello2:


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PostPosted: Sat Dec 15, 2018 8:42 am 
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ok running the batteries down lightly finishing them off with several cycles on the 996 brushless hammer drills small light [about 1-2w]
the light on this drill runs on for about 20 mins on high setting so after the power bar shows nothing give this light several cycles until it only runs for a few mins
last bit done at room temperature
i am well aware a heavy used battery that has "run out " on a really heavy draw tool after a few mins will happily power another tool for quite a while as the perhaps 10-15% power still left is not enough for a heavy draw tool ok for say a light or perhaps the radio
and yes the dcb 118 charger has a fan

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PostPosted: Sat Dec 15, 2018 10:28 pm 
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4ah=34 mins

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PostPosted: Sun Dec 16, 2018 9:35 pm 
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I have to say that I tend to side step the issue by having 6 to 8 batteries in play (6 of them are 5Ah) with a double fast charger on at all times. I yet to run out of charge (can't afford the time to pop the kettle on like you, Fin - I should be so lucky) but it can sometimes involve a bit of juggling. With a lot more tools going to 2 x 18 volt things can only get worse.

The DW charger with a fan in must be fairly new - not seen anyone on site using them so far (and there are a fair few people round and about with new DW kit)

What I think is a shame is that there are so many different battery mounting systems out there. Time for a universal attachment system, do you think? I know that Metabo are trying to push the Cordless Alliance System (CAS), a manufacturer-independent battery pack system, but at the moment that is restricted to Metabo, Rothenberger, Mafell, Eisenblätter, Collomix, Haaga, Starmix, Eibenstock and Steinel. I'm sure that everyone is familiar with those names........ Thought not. Hell's teeth, even Metabo HPT (or Hikoki or whetever the heck Hitachi's now sold-off power tool division is called this week) wasn't included in the launch. Maybe if they'd signed-up Bosch, Makita, DW or Milwaukee I'd have been more convinced

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PostPosted: Sun Dec 16, 2018 10:14 pm 
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ok 2210 put the 6ah battery on charge
next cycle will try all three with a normal charger for comparason :thumbright:
stopped at 58 so 48 mins

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