Batteries... Genuine Makita or cheapo import?

I recently received my Makita 10.8V drill/driver kit for $200AUD delivered.

 

 Impact Driver, Drill Driver, 2 genuine Makita batteries, charger, flashlight, and a loada bits in a drawer in a case. Handy.

 

I bought a cheap Chinese battery pre-empting the need for one to be on charge all the time as backup. Genuine rated at 1.3Ah cheapo at 1.5Ah.. Surely that's just bollocksy ebay marketing? Genuine's got to be better.

Both Batteries were fully charged, run in over light use, and fully charged again.

Test 1 - Running drill continuously at full speed for 3 minutes using stopwatch.
Genuine - at 50 seconds slight dip in speed, 1:20 another small dip. Still powerful at end.
Ripoff - Notably Higher RPM at start. Held RPM continuously until end.

Test 2 - Drilling through 2" of hardwood with 6mm HSS drill bit. Until impractical power output and automated drill cutoff (these drills have low-voltage disconnects to protect batteries).
Genuine - Outlined in in aqua.
Ripoff - Outlined in green.


Notes - Sequence for testing the batteries was as follows.. Test 1 genuine, Test 1 cheapo, Test 2 genuine, Test 2 cheapo. This gave each battery an approximately equal recovery period after Test 1. In fact, the cheapo had a slightly shorter recovery period.. Meaning of course that it's performance was hindered more by time.
Thoughts - Cheapo ripoff (at half the price of genuine) more than twice out-performed the genuine Makita battery. Cheapo felt more powerful during use. Cheapo actually feels heavier in the hand. Cheapo's stated 1.5Ah might even be underestimated. Both batteries and drill quite hot. Not doing test again.
Shocked at the result I contacted my genuine certified Makita supplier and asked if the batteries were possibly old. They'd just been delivered to them direct from Makita two weeks before I had them. I don't know if they'd been in storage elsewhere. Given these two genuine Makita batteries I have are performing about the same I've made up my made.

Now to carry on with the treehouse.



Location: New South Wales 2484, Australia

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