listermint wrote: » No idea but look at the aH of the batteries. 4 plus is the absolute baseline these days for most tools. But some even go up to 12aH for the likes of DeWalt. aH providing the grunt for the motor.
listermint wrote: » No idea
jmBuildExt wrote: » Amp Hours measure battery capacity not "grunt" or power as i think you intended. So a 4Ah battery will last twice as long as a 2Ah battery in the same tool. The Ah rating has nothing to do with the tool itself, just the amount of time it can supply power to a particular tool (and that amount of time can go up and down depending on how much power the tool is using) You should have stopped here - this is the answer im giving below in along winded way. Short answer is it depends on the design of the tool and how much current it will draw from the battery. Read on for the boring bit - Ohm's law lesson incoming Power has a relationship to voltage, P=VI (where I is current) - so in that sense you might think if I up the voltage of the battery, I up the power. This would be true if you were talking about the same tool (ignoring the fact that the internals may not be designed for 40v). But the other part of the equation I (current) will depend on the resistance, R inside the device. I=V/R Putting the 2 formulae together you get P=V²/R So since R is dictated by the device itself, and we don't know what R is in each tool you haven't enough info to make a call based on what type of battery it uses.
listermint wrote: » Oddly enough I've a degree in electronic engineering so I'm probably the last person that needs to be thought any formulas in relation to current voltage and resistance. Thanks though. My point stands.
jmBuildExt wrote: » So do I and i use it
Lumen wrote: » I think it's lovely that you're both using your degrees to solve junior cert level science problems. :pac:
Lumen wrote: » Ohm's law is all well and good, but in practice what matters is power, and power is determined largely by the size of the battery pack. Each individual cell (usually in 18650 form) is limited in its discharge rate, so the more cells you pack in, the more power the pack can deliver. A Makita 18V 3Ah battery (for instance) has 10 18650 cells inside, and one of those batteries can push about 800W for about 4 minutes, although more realistically the voltage and wattage will drop as the cells discharge, to perhaps 60% (~500W). This means if you have a twin-18V tool like a Makita plunge saw that is rated for 1200W, it's going to struggle with twin 3Ah batteries (~1000W at low state of charge), whereas with 4Ah or 5Ah batteries it will be fine. Similarly with the Makita electric lawnmowers, which are also rated for about 1200W. So if you want more wattage you need more cells in a bigger pack. They may be wired for different voltages (the Ego lawnmowers are 2.5Ah @ 56V, I think), but the watt-hours are what's really important. 2.5 x 56 = 140Wh, compared to a Makita 5Ah @ 18V x 2 = 180Wh. My Makita lawnmower noticably struggles with 4Ah batteries compared to 5Ah. TLDR: watt hours matter.
Bluefoam wrote: » I have a hammer combi drill, jigsaw, circular saw, strimmer and lawn mower all working off two Makita batteries, and it's such a great system + I only need to keep one set of batteries charged for all my tools.
listermint wrote: » Grand stuff ! Then you'll know tools will get the full extent of their power longer with higher current rates batteries. Rather than not operating at all well for the same period of time. So given the difference between the two brands of one bad say 2Ah batteries and the other had 4Ah batteries I'd get the latter.
jmBuildExt wrote: » I do know - sure didn't I say it above Take the aldi or lidl tools last week (cant remember which), they were selling the 2 Ah and 4 Ah batteries to be used in the same tool. Using one over the other doesn't make it cut any better, just makes it last longer. You must have forgotten that above when you said higher Ah gives more "grunt".
mloc123 wrote: » But, you can also do this with the Aldi/Lidl ranges... they use a single battery system now.
Bluefoam wrote: » I heard that one of them had changed to a new battery system, so all the tools sold previously had been made obsolete... Also, can you get the tools you want when you walk into the shop or do you have to wait until the week they decide to do a release? Are all of the tools kept in range all the time or do they make them in batches and make them available randomly?
Bluefoam wrote: » My understanding is that Parkside was contracted to a new factory in China. With that came a new battery design. So their last batch of tools was no longer compatible... So what happens when they start another contract with the next selected factory? Will the parkside tools no longer be supported? History would suggest that that would be the case... Bosch, Stanley, DeWalt, Makita are unlikely to abandon customers like that...
jmBuildExt wrote: » You alluded to it above; what the OP needs to look for is the Power rating of the tool rather than the battery pack it uses.
Discodog wrote: » I am sort of in a similar position as the OP. I want to settle on either Aldi or Lidl & both seem to have advantages/disadvantages. I have always been pleased with Parkside but Aldi is closer & seems to often have offers on batteries & chargers.
Thanks.
Great that you can debate the pros and cons of different batteries. When I rock up to my local Aldi ( it only suits me about an hour after they open) the batteries are always gone. I bought a tool about six month ago thinking ah sure they’ll have the batteries shortly. Silly me . I there a shortage of ferrex batteries in Aldi?😣
Do'nt know where you are located, but I always see them in Oranmore, Galway.
Have you checked that they haven't moved them near the tills ? My Aldi seem to do this tp avoid theft. I think that I have decided to go with Lidl rather than Aldi. I have always found Parkside to be good.
