Makita Batteries

[Jupiter01]

I have the following Makita tools: bluetooth radio, drill/driver, impact driver, circular saw and recip saw

I have a selection of batteries: 3ah, 4ah and 5ah

I have the attached charger.

Q. Can I safely use these batteries with any of the above tools and charge them using my existing charger? Secondly, am I just getting more power and/or with the higher rated batteries?

Thanks in advance.

 

[Burnerman]

If the power tools have the same voltage requirements and the batteries fit in both the charger and the tools I can't see any problems.
The higher the Ah rating, the greater endurance the tool has......it doesn't make it more powerful.
John

 

[big-all]

with makita newer batteries and tools can have stars

now any older tool will work happily with any battery old or new but some newer tools have higher draw so need starred batteries with the correct high draw protection

 

[catlad]

Bigger batteries do give more power.

 

[EddieM]

Bigger batteries do give more power.

Only when you use them as a hammer.

 

[catlad]

Ok well the makita batteries might not give you more umfff
but the Bosch pro core 7ah certainly do!!!!!

 

[big-all]

technically amps is fuel only buuuut
because the rate and level off charge is governed by being a bit above normal as in normal charge rate on a 18v battery is about 21.6v or 20%
now with use the battery will quickly drop to 18v on a smaller capacity[2ah] battery but take longer on a larger capacity[7ah] battery
another factor is higher capacity may need a greater voltage off perhaps 22% or22v to give a reasonable charge rate
other factors are if a battery is old or just powerful enough there will be no oomph and lots off zzzzzzzzzzzz where as a larger capacity will have lots off vroooom

 

[rsgaz]

Bigger batteries do give more power.

Tis true.

Once you're up to 3Ah and larger sizes, there are two(or more) 'sets of 5' lithium cells, wired in parallel. These still output a nominal 18v, of course, but they have a lower internal resistance than a single 'set of 5', found in compact batteries.

This means under load, in particular with higher current tools(e.g. SDS, circular saw), they will have slightly more power than when used with smaller Ah batteries, as there will be less energy wasted as heat inside the battery itself and less voltage drop seen at the motor.