Are you in contracting business? Otherwise, no matter what, you probably use it once every several years

Yes. It is not the tool that would easily break down. Even if it is, you still have old method to back up.

At first I was wondering why need battery power but it is necessary for contracting job

Battery last longer or not depends on the load it is supplying energy for. High drain battery is just a battery that can supply high current that is required by load. Low drain battery cannot enough power to device that require high power.

So, basically the device you bought will come with required battery power capability. However, the high current battery can also be used on devices that require low current. It will not make battery drain power faster. In fact given high drain and low drain battery with same capacity, the high drain battery perform better since normally high drain battery can maintain rated voltage constantly much longer until very end compare to low drain battery.

I was talking about high drain battery, not high capacity battery. Two different thing.

High Drain Battery and Low Drain Battery with same capacity will last the same time logically but practically maybe not. The low drain battery will drop voltage earlier than high drain battery thus will stop operating device it is powering earlier.

That's the main reason for purchase discouragement

Anyway, if device is not requiring high drain I also think that there is no need to waste money on that, even though with suitable charger, it can be charge faster than normal battery.

You can read review. Some faulty during arrival. Some work just fine. Oooo. I mean order online one. You mean like from Mr. DIY? I guess should be ok. Make sure to use immediately after purchase in case faulty. Mr. DIY has 3 day warranty, right?

Sometime you think you just probably use for project only one time. Therefore, maybe it is ok. If spoilt after use, then no problem

Why not buy something that you can get serviced locally. I end up choosing the known brand since even if you think you will not use it often, the drill/driver with hammer drill feature is a single handy tool that you want to have around your house even if you are not even hobbyist.

I bought a good branded 750W hammer drill and now I also have a good rotary hammer drill

I'd suggest that you go for wired one.

You can read here in Bosch forum

https://www.bosch-professional.com/gb/en/co...2983394-t#/main

Actually both have about same spec. The impact power is exactly the same.

In case like this I'd go the newer model because it may have addressed the problem with previous model with some improvement

The DFE and DFR suffix meant for difference in package. The DFR cost more because it comes with carrying case, quick change chuck, etc

You can go here:

https://www.bosch-pt.com.my/my/en/rotary-ha...s-131445-ocs-c/

Select product you want to compare and then go back to the top of the page and click compare. You can compare the difference

No need as powerful as this GBH 2-26 or 2-24 will be adequate I believe. House wall is just brick and cement plaster, not concrete like post and beam.

House wall is not concrete. I think he meant cement

I see. I was looking at makita 2810. Looks like too much

Anyway, if you buy big machine for just 1 time job

Rent like ceo684 is good option too.

I think once you cut two parallel groves 1 inch apart, it is not difficult to chisel the concrete with the tool you have in mind before.

I've had a 750W impact drill before I bought Makita HR2470X5 (I think - forgot model). It is enough to serve me and handy to have at home

This post has been edited by Zot: Jul 30 2019, 08:32 AM

How long have you been using it? If if sparks continuously around commutator, then probably just need cleaning with air hose nozzle to blow out dust.

Maybe others like the smell like smokers with tobacco smell

Normally it is the other way around. You can find generic battery for branded power tool. Original battery is expensive and generic one probably less than half the price with even more juice. Why would one wanted to buy cheap power tool to operate with original battery?

Don;t think the other way around. The only thing you can do is disassemble and replace battery inside the casing

Bosch compatible battery try here

https://www.lelong.com.my/store/GEOLASER/ca...ompatible+bosch

You mean multi-tool or oscillating tool vs grinder?

They are somewhat over-lapped on some task but serve two different purpose in my view.

You can plunge cut a small square hole and do it much faster, that cannot be done cleanly (or impossible) with grinder.

Can access tight spot cutting.

Since it is oscillating, it will not pull to one side and very easy to to do work precisely.

I think it is still speed adjustable unit. The speed depends on how far you pull the trigger button. The same thing for GSB16E. Is there any know on GSB16E?

I use other brand with adjustment knob. The knob is just to set maximum distance you can pull, thus limit the maximum speed of the drill. I'd go for ozak suggestion. The more power would not hurt and you will appreciate it in future. Mine is also 750W but now even bought a more powerful one