Craigh9916 Posted August 20, 2018 Report Share Posted August 20, 2018 Hi can anyone tell me if there is much difference in power between the 6ah flexvolt battery and the 9 Ah when used on the 20v mitre saw ? The reason I ask is I’m going to buy one mainly for my miter saw but if there isn’t a lot in the performance I will get the 6 Ah as at least it will get used on a few other tools as it’s not as big but if the 9 Ah makes the saw a lot more powerful then I will buy that and leave it on the saw ? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
RickyMcGrath Posted August 20, 2018 Report Share Posted August 20, 2018 ah ratings only add negligible amounts of “power.” The key factor is runtime. 6 vs 9, you should see roughly a 50% linger runtime. Quote Link to comment Share on other sites More sharing options...
Craigh9916 Posted August 20, 2018 Author Report Share Posted August 20, 2018 ah ratings only add negligible amounts of “power.” The key factor is runtime. 6 vs 9, you should see roughly a 50% linger runtime. With the larger cells of the 9 Ah I was thinking better performance as my bosch 6.3 Ah I’m my circular saw is far better then the 5 Ah performance wise Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Babysaw Posted August 20, 2018 Report Share Posted August 20, 2018 There are YouTube vids on this subject. Long story short, a dcb606 spins the blade 10% faster than 20v batts. I try to only run them on the boss’ BabyChop Quote Link to comment Share on other sites More sharing options...
Mordekyle Posted August 21, 2018 Report Share Posted August 21, 2018 I have the 9 on my 7 1/4” saw.I don’t notice any difference over the 6AH FV. Huge difference between 20v and FV.A friend bought a 2 pack of 9 AH and gave me one. Too heavy to put on anything else, so it lives on the SCMS.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
TrimmerMatt Posted August 21, 2018 Report Share Posted August 21, 2018 If you are doing a LOT of cutting then you will notice the 9 will keep peak performance for longer, but honestly it's not a big difference. I only use the 9 in my baby saw when I'm cutting lots of shoe molding and don't want to go back and forth to the charger. By the time I kill a 9 I'm done the job or ready to take 5. Quote Link to comment Share on other sites More sharing options...
Jpgwoodworking Posted August 21, 2018 Report Share Posted August 21, 2018 I run the 6 ah Flexvolts in the 20v miter saw and 20v 7 1/4 circular saw. They make a noticeable difference in power and run time over the 5 ah’s, I typically get multiple days with it with a lot of cutting like running wainscoting. I think the 9 ah was primarily developed to give the 577 worm drive style saw better run time. Keep in mind when run in the Flexvolt tools they are only 2 ah and 3 ah batteries. Quote Link to comment Share on other sites More sharing options...
Jronman Posted August 21, 2018 Report Share Posted August 21, 2018 I would get the 12/4 flex battery over the 9/3 flex. It is same size as the 9/3 flex but has the 21700 cells which would be a bit more powerful than the 20700 cells that the 9/3 has. I don't know how much more powerful or if it is even noticeable. Would I get the 6/2 over the 12/4? I have a handful of 6/2 flex batteries and they have had plenty of power for me. I have never used the 9/3 or the 12/4. I wouldn't mind trying a higher ah battery. You are probably best off getting a 2 pack of 6/2's. They are cheaper per ah than one 12/4 yet still give you similar amounts of runtime. Also because there is 2 of them you can have one on 2 tools vs buying only one 12/4 and being restricted to just one tool at one time. Quote Link to comment Share on other sites More sharing options...
Framer joe Posted August 22, 2018 Report Share Posted August 22, 2018 I have 4 of the 12ah..it makes a big difference on all the 60v tools.....but 9ah is plenty for the mitre saw...I wouldn't go lower then 9ah /3ah on any 60v tool, .,it absolutely makes a difference in performance and runtime Quote Link to comment Share on other sites More sharing options...
Craigh9916 Posted August 22, 2018 Author Report Share Posted August 22, 2018 I have 4 of the 12ah..it makes a big difference on all the 60v tools.....but 9ah is plenty for the mitre saw...I wouldn't go lower then 9ah /3ah on any 60v tool, .,it absolutely makes a difference in performance and runtimeBare in mind the title says on a 20v tool I’m not using them on a 60v I just want to know the difference between the two in power on a 20v mitre Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Framer joe Posted August 23, 2018 Report Share Posted August 23, 2018 My bad, why use a flex battery on a20v mitre? It won't help much but more runtime...plus I have that and it is not very good compared to the Ridgid or Milwaukee....a 5ah is all you need for it Quote Link to comment Share on other sites More sharing options...
Craigh9916 Posted August 28, 2018 Author Report Share Posted August 28, 2018 My bad, why use a flex battery on a20v mitre? It won't help much but more runtime...plus I have that and it is not very good compared to the Ridgid or Milwaukee....a 5ah is all you need for itBecause a few people on here have said the flexvolt makes a big difference in performance on the 20v mitre Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Mordekyle Posted August 28, 2018 Report Share Posted August 28, 2018 Try it yourself. You’ll see.Longer runtime of course, slightly higher RPMs. It seems to run a bit stronger, and weight is not a concern on the SCMS.The 20v tool where the FV battery shines is the 6 1/2 circular saw. It’s a different tool with that battery. Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Polki35 Posted September 14, 2018 Report Share Posted September 14, 2018 I had bought the 20v miter to add to my 20+ dewalt 20v tools and was extremely disappointed with the 4ah battery It took a while to cut stuff and so i popped in one of my 9ah batterys and immediately I could hear a difference when I hit the trigger and the cutting was alot better than with the 4ah I decided to keep it use it alot now only with the 9ah battery tho Quote Link to comment Share on other sites More sharing options...
Mordekyle Posted September 14, 2018 Report Share Posted September 14, 2018 I had bought the 20v miter to add to my 20+ dewalt 20v tools and was extremely disappointed with the 4ah battery It took a while to cut stuff and so i popped in one of my 9ah batterys and immediately I could hear a difference when I hit the trigger and the cutting was alot better than with the 4ah I decided to keep it use it alot now only with the 9ah battery thoTry the 6AH Flexvolt on your circular saw. You’ll never go back.Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Babysaw Posted September 14, 2018 Report Share Posted September 14, 2018 In a mitre, you get more RPM in an impact wrench, you get more torque. Its been tested. Google folks EDIT: that was rude. Sorry. Here’s the link: cheers fellas Quote Link to comment Share on other sites More sharing options...
npcnj8 Posted October 12, 2018 Report Share Posted October 12, 2018 I have been running the Flexvolt batteries on my 20v shop vac and there is a noticeable difference in suction Quote Link to comment Share on other sites More sharing options...
Babysaw Posted October 12, 2018 Report Share Posted October 12, 2018 37 minutes ago, npcnj8 said: I have been running the Flexvolt batteries on my 20v shop vac and there is a noticeable difference in suction Have you tried the new slim pack? New cells are legit Quote Link to comment Share on other sites More sharing options...
npcnj8 Posted October 13, 2018 Report Share Posted October 13, 2018 22 hours ago, Babysaw said: Have you tried the new slim pack? New cells are legit No, what is the model number of the new batteries? Quote Link to comment Share on other sites More sharing options...
Babysaw Posted October 14, 2018 Report Share Posted October 14, 2018 Dcb230 Quote Link to comment Share on other sites More sharing options...
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