If that 10pcs battery is 4ah, than should be correct. Given it run 5pcs series and 2 set of parallel.

You need some discharge device to check the capacity.

Next time kong liau, can just change the battery to higher capacity. 6ah possible. Even 9ah or 12ah.

But you need to use the high discharge type.

Have to check with Yushin.

Depend how cheap. Those too cheap will just use non brand type. Which have short charge cycle or lower capacity.

Brand battery will be more expensive. If they want keep it low cost, they will use lower capacity and label it at 2ah.

But fake or Ori, they must use high discharge type. If not will over heat or catch fire.

There is a print word and number on the cell. Just key in the whole number in uncle google, and you know what cell and capacity already.

There is 2 type of battery cell. Normal discharge and high discharge. High discharge battery can discharge as high as 10A. Without heat the battery. Or catch fire.

It is normally use on vaping device. So you want to buy this type of battery, look for vaping people. They sell 100% ori.

For fake battery to achieve higher Amp but using normal battery, they parallel it the battery. So your drill motor require 10A to run, 10/2= 5A each battery discharge. So it won't heat up the battery.

Capalang battery.

Normally will print like UR18650NSX which is Sanyo battery. Or INR18650-25R5 which is samsung.

Ok la. seldom use.

Cheap ma.

Sample of brand cell.

LG cell. Rip out from Xiaomi powerbank which spec is 16000mah. Cell is 2600mah spec. actual is 2400mah


Sony cell. Rip out from Dell laptop battery. This cell is more than 10yrs old. Still got 1000mah left.


This is capalang cell. Rip out from powerbank which spec is 10400mah. (Fake Xiaomi) But the cell actual is below 500mah each.


This post has been edited by ozak: Sep 12 2018, 09:01 AM

Few pcs only la.

Thinking to replace or add in a battery bank to my existing solar system battery. Thinking of using Li-ion cell instead of AGM battery. Initial cost, Li-ion is expensive. But long run, Li-ion is cheaper.

And make some 12v li-ion battery for my motor ski and outdoor usage. Lighter than lead seal battery. Can speed up my motor ski.

Already invest on this. Instead spot weld. This dremel more variety usage.

Yup. Heat will damage the cell.

But if you know how to control, it should be ok.

Need a high watt solder iron that can shorten the soldering duration. So the cell don't get hot long.

That's why have to get this dremel versatip torch blower that have solder tip. It heat very hot.

For electrical solder iron, at least 200w. And it freaking bulky. I rather get the dremel.

This post has been edited by ozak: Aug 16 2017, 09:48 AM

DIY lor.

Not worth to buy. Unless you want to make Tesla power bank.

Don't dream so far la. Your project will take long to do and won't kickstart wan.

All this tech thing is beyond our reach. Too expensive and not easy to get here.

Just kickstart what you have here and those easy get parts. No point to wait.

With some calculation, actually Li-ion battery are more cheaper to run. Compare deep cycle battery which is cheaper in initial cost.

Got to find some li-ion battery price that what western enjoy. We here always more expensive to get.

I use the step down transformer for my makita 120v charger.

Last time I ask people at US help me to ship over here use sea shipping. Took about a month. Courier till doorstep.

Cheaper alot. But have a min weight to justified. Not mistaken over 100lb.

I accumulate up few box. Than add some item from my relative side. So the weight over 100lb.

So sometime wait 1/2 a yrs only I get my thing.

So who said powertools just for job.

Many way to use.

Ya, got to passion if want cheap.

But if for job, doesn't matter the shipping cost. Profit payback.

Interesting if they can ship battery. Would like to try. If combine shipping cost cheaper than here.

Still very expensive compare individual shipping way.

If you have friend and relative, why not ask them to look for you at homedepot. Give them the picture what you want. Than ship back here.

Sometime dirt cheap at the store.

Last time my GSB Bosch also have same problem. Long no use, the trigger sot sot.

Double post

This post has been edited by ozak: Aug 26 2017, 09:38 PM