This content comes from @What's worth buying APP, and the views only represent the author's own |Author: Boiled eggs
Today I would like to share with you the trial and dismantling and upgrading process of the 7 yuan male model electric screwdriver.
Why buy it
I like ultra-low price power tools, overturned can be sent out to avoid pits, if it is worth it, it can be sent out to recommend to everyone, just like this 7 yuan electric screwdriver, no matter how you look at it.
Cheap power tools that often surprise me.
How to place an order for 7 yuan
Open the limited-time flash sale in the upper left corner of the Xixi homepage, click in and get a 5 yuan no threshold coupon.
13.9-5, I can get 8.9 yuan.
After pulling down the page, I found that Rio Knit has the same style as the Fuge button, which is cheaper by one dollar, and it is estimated that the things in it are similar.
I'll start with one, just disassemble a different one for everyone to see, look at the products with similar appearances, and the internal gap is not big.
Choose the 4.2V model inside, 12.5-5, and finally 7.5 to hand.
It's a bit of an artifact.,3.6V is more expensive.,I don't know what's going on.。
False standard of parameters + rights protection
Parameters are falsely marked
The net weight is 200g, and the actual 165g is 165g, don't underestimate the 35g found out, which means that it is a simple match.
I don't understand why the weight should also be falsely marked, and we don't have a scale?
But then I understood that his battery was so lightweight, I'll show you later.
The no-load speed is also false, I counted, it can't reach 250 rpm.
The battery capacity is 1800mAh, and the 14500, which is not particularly light without a standard, is actually 500mAh.
The charging current is 0.5A, which cannot reach 2A at all.
It's normal, the ordinary battery protection board is 0.5A, and 2A is not normal.
Find customer service feedback
I thought it was the store that sent the wrong goods, and politely asked the customer service, and he said that he didn't send the wrong goods, this is the thing.
I asked the seller why the parameters were inconsistent.
He denied it, saying that there was no false standard and that there was a formal quality inspection report.
When I offered to see the report, he didn't give it.
In fact, everyone can accept things at this price, and the cost is here, but what's the point of your false label, can you just use it?
In the end, Duoduo dealt with it...
Get hands-on
Slip resistance
All plastic materials, not a little non-slip rubber is not willing to use. The front end is made with a little anti-slip bump, and the effect is not obvious.
For the first time, I felt that it was very uncomfortable to feel silky, and the texture was like a girl's skin, very slippery, and I couldn't hold it at all.
center of gravity
Thoroughly top-heavy, it is recommended to use it vertically with your head down, it will be more comfortable.
Grip feel
It's not very easy to hold, and the difference between it and the Bosch Go used before is relatively large.
He could actually make it shorter, which would be much easier.
Concentricity
Concentricity is indeed average.
Torque
I can't measure the value of this, the screwdriver is mainly used in the repair of electronic products, so it does not need too much force.
I tried to screw a self-tapping screw on the pine wood and was shocked to find that I could screw it in, which I was quite satisfied with.
charge
The charge will change over time, and the current will slowly decrease, starting at 0.5A.
It's good, full of being able to stop on your own.
I have indeed encountered non-stop charging before, and it is very unreliable to use.
fittings
Although the sparrow is small, it has all kinds of organs.
I was given two bits and a charging cable, and I could use it at hand, which must be praised.
Dismantle and upgrade
There are four screws on the side, the front two are exposed, and the back two are under the stickers, which are easy to remove.
I used Fuge's 31 yuan metal gear model to dismantle it.
It's very similar to the 14 dollar one from Fug, but the color of the board is different, and Fugg is green. The plug position is also different.
The interior is quite simple: reduction gears, motor, charging protection board, battery, charging plug.
Planetary gears, which play a deceleration role.
The gears are plastic, not as strong as metal, so don't twist too hard in the future.
Add some lubrication and there's nothing else to do. As it turned out, the operating noise was still high.
I don't know if the motor is pure copper or copper-clad aluminum, but it looks fine.
The same internal space as the Fugg 14 dollar model, the 18650 slot, the 14500 battery.
I doubt they have a full-blooded version for sale, whether it will be an overseas version or something.
I usually have a lot of batteries, with an average price of 2 yuan, which came in handy this time.
If you are not willing to use EVE 2550, it will be good if it is an ordinary 1800mAh, which is the same as on the manual.
This time it really reached the nominal 1800mAh on the page.
Tried it.,This slot is just right to put 18650.,Modify it maybe you can get up to 21700.,But it's not necessary.。
Please come out of the "big injustice" spot welding machine, you can't use it a few times a year, and you can also weld it with an electric soldering iron.
Pull the nickel strip off the 14500 and weld it to both ends of the 18650 battery.
Reinforcement the inside with hot melt adhesive to avoid too much displacement when falling, and don't break the screws.
Then trim the sponge inside to hold the battery in place, because the battery has become larger.
Reassemble without any change in appearance.
Let's take another look at the weight.
Now it's 198g, that's why they wrote 200g in the first place.
They are clearly reduced, not really.
I originally wanted to make some improvements to the anti-slip, but I tried the keel hand glue of the badminton, but it was not perfect, so let's talk about it later.
Well, after the simple transformation, the center of gravity has now moved up, and it is much more flexible to use.
One more tool that works but isn't too easy to use.
summary
- Is it worth it?7.5 free shipping is worth it, and the seller basically doesn't make money.
- Is it cost-effective? It is very high, and some brands of manual screwdrivers are more than this price.
- Can it be used, I change the battery mainly to last longer, it is good to use in simple screw disassembly and assembly, the strength is not so large, and it is not easy to slip the silk, and it is more than enough to install a socket at ordinary times.
That's all for the 7 yuan electric screwdriver sharing.
The author declares that there is no interest in this article, and friends are welcome to communicate rationally and discuss harmoniously~