Fast charge your Lemfo

LEMFO Products
,
#1

…it used to take more than an hour and now it only takes 40 minutes when Wifi+Screen is on… while around 25~30 minutes when screen is off…

I modified my charger accidently and results are superb.

My default stock charging cable was not so responsive, sometimes it used to disconnect by itself and copying data was even very difficult because it very flexible.

I separated the both top and bottom parts of connector with my finger nails, those all 4 pogo connectors where there soldered with very thin wire in R-to-L sequence… : Red Green Blue Golden… but that Golden wire was not fully soldered. I soldered it but I was not satisfied with result.

Red : +5v
Green : Data positive
Blue : Data negative
Gold : Gnd

I took an old Fast Charging kind of USB cable. which has thick wires in that and standard color codes, Red, White, Green, Black.

Red : +5v
White : Data positive
Green : Data negative
Black : Gnd

And soldered on sequence places. (righ to left)

I don’t know how long does it charge with stock cable because it never worked for me in beginning… Later it used to take more than an hour and now it only takes 40 minutes when Wifi+Screen is on… while around 25~30 minutes when screen is off.

This was an experience and I thought I should share with others.

1 Like
#2

Interesting, maybe you can post some picture and tell us what your watch name is.
Thanks

1 Like
#3

I’m using Lemfo lem10. But I guess this can be done with any cable… But do it in your own risk. I tested with my multimeter…

This is standared USB cable with 4 wires. You can ignore the out mesh, just remove that all.

IMG_20200827_161654
IMG_20200827_1616542160×3840 1.31 MB

I’ve already separated this magnetic connector. …

IMG_20200827_161921
IMG_20200827_1619212160×3840 1.44 MB

These are 4 pogo connectors with magnets on both sides.

IMG_20200827_161925
IMG_20200827_1619252160×3840 1.45 MB

Push the magnets from outside… they will be removed inwards. during soldering they can cause trouble with the soldering iron.

IMG_20200827_162244
IMG_20200827_1622442160×3840 1.41 MB

Now you will get bare connectors these are now ready to be soldered…

IMG_20200827_161709
IMG_20200827_1617092160×3840 1.48 MB

IMG_20200827_161730
IMG_20200827_1617302160×3840 1.25 MB

I can’t show you how did soldered because I didn’t have any camera(mobile) holder to take pictures where soldering it.

See… from Right to left… RED-WHITE-GREEN-BLACK

Red : +5v
White : Data positive
Green : Data negative
Black : Gnd

IMG_20200827_163253
IMG_20200827_1632532160×3840 1.55 MB

After soldering… it is the time to put removed magnets back, their attraction or repelling direction + - and - + poles are important.
Tip: Just put the magnets on watch, they will find their polarity themselves… just use the same direction and push magnets from inside connectors one by one.

IMG_20200827_163409
IMG_20200827_1634092160×3840 1.8 MB

just use the same direction and push magnets from inside connectors one by one.

IMG_20200827_163539
IMG_20200827_1635392160×3840 1.51 MB

Now test your cable… if it works… snap the cover back…

IMG_20200827_163550
IMG_20200827_1635502160×3840 2.01 MB
IMG_20200827_163623
IMG_20200827_1636232160×3840 1.63 MB

Here is powered connector… with OLD cable.

IMG_20200827_163655
IMG_20200827_1636552160×3840 1.23 MB
IMG_20200827_163715
IMG_20200827_1637152160×3840 1.4 MB

I hope this will enough to understand.
PLEASE DO THIS ALL with CARE and being RESPONSIBLE YOURSELF.

2 Likes
LEMFO LEM10 QUESTION? Ask it here!
What causes my battery to drain so fast...?
#4

That’s a very detailed post. Thanks very much.

2 Likes
#5

:slight_smile:

#6

super disappointment after updating lemfo LEM10 v1.1… previously each 1% was being charged in 20~25 seconds… but after updating to v1.1. it is charging in 180seconds :angry: