battery electronics gadget watches

Garmin Vivoactive HR teardown

Unfortunately my garmin vivoactive HR got into the water and died. So here it is in pieces… Sadly the Vivoactive is not made for swimming which I forgot as I also have the Garmin Forerunner which is Ok in the water. Otherwise, the Garmin Vivoactive HR is a great watch and very useful. 

The screen was easy to remove with one of these prying too you can buy on amazon, like the one below (sponsored link). 

Once removed be careful when removing the 2 flat connector. Use the same tool. 

Most of the next images are a destructive teardown as some of the connectors were damaged by water and corosion.

Also the battery was completely flat, 0V due to the water that shorted the circuit.

ONce you remove the EMC shield of the PCB you find all sorts of nice circuits. Many from AMTEL. There must be the GPS, Gyro, etc…

Nice view of the circuit board of the VivoActive HR. 

The lipo battery of the garmin

The heartbeat or pulse counter of the garmin Vivoactive HR

The GPS or blue tooth antenna (I am not sure which one)


The screen illumination LED of the Garmin Vivoactive HR

This is the culprit, there is a hole from outside to inside of the watch under the little metal plate of the Garmin Vivoactive HR

the screen of the Garmin Vivoactive HR

appliance battery electronics teardown

Dyson defect battery

This dyson battery started blinking red for ever. Dyson replaced it.

battery electronics gadget gardening teardown

Mosquito repeller by ultrasounds

battery electronics gardening teardown

Ryobi Li-ion battery pack (Similar to Bosch, Makita Li-Ion Packs)

18volts Ryobi BPL 1820 46Wh battery pack for powertools

Made of 10 li-ion batteries of 3.7volts.

The charging board with the controlling ic.

The Ryobi Fuel Gauge indicates red orange and green.

Among the top power tools & cordless drill you can find are the followings:

Makita XFD10R

DeWalt DCD790D2

Milwaukee 2703-22

Bosch DDS182

Rockwell RK2852K2

Kobalt 1424A-03
Ryobi P1811

Porter-Cable PCCK600LB

battery electronics teardown

Easy motion ebike battery

This is the battery of an Easy Motion li-ion electrical bike

It is made of 30 18650 li ion batteries.

The voltage regulator of the battery pack

battery electronics teardown various

Bosch Powerpack 500 Electrical Bike

This is a Bosch Powerpack 500 for an electrical bike. It contains 40 18650 cells of 3300mAh each. Total is about 36volts, 19400mmAh or 500Whr.

A vast choice of electric bicycles on Amazon check for free delivery

The 18650 cells were mostly empty due to their long past life.

Here a some of the best bikes you can find. 
A vast choice of electric bicycles on Amazon check for free delivery

VoltBike Enduro
BULLS E-Stream EVO 3 Carbon 27.5 Plus
Haibike SDURO HardNine 4.0

Gazelle Arroyo C8 HMB
Magnum Metro
Electra Loft Go! 8i
Rad Power Bikes RadCity Step-Thru
2017 BULLS Monster E FS
Enzo Ebikes Folding Electric Bike
iGO Electric Elite
VoltBike Elegant
Trek CrossRip+
Virtue Cycles Schoolbus+
Butchers & Bicycles MK1-E
Riese & Müller Supercharger GT Touring
Trek Verve+
Faraday Cortland