Methlal Pallewatta
New Member
- Joined
- Oct 8, 2014
- Messages
- 23
- Reaction score
- 15
- Location
- Sunnyvale, CA
- Country
- United States
- Dash Cam
- Transcend DrivePro, Street Guardian, Viofo
If your dashcam can run at 5V here's a low cost alternative to Cellink Neo etc for using in the the parking mode. Will cost around $75 to build. Of course won't charge as fast as a Cellink but at the fraction of the cost. No BLE based monitoring via app.
LiFePO4 (not Li-Ion/LiPo) battery pack (supports UPS like functionality) and has a capacity around 80WH (haven't done a capacity test yet).
https://www.amazon.com/gp/B07YRZYLKV
Buck-boost converter with a voltage limit of 14.6v and a current limit of 2A is used as a charger. According the manufacturer the battery pack can be charged at 4A and has a built in BMS to prevent overcharging. Prefer to limit the charging current to around 3A (0.5C).
https://www.amazon.com/gp/B07VNDGFT6
An electronic load drawing 2A is emulating the camera load.
Charging at 2A with the buck-boost converter. A programmable DC power supply (14.7v) emulates the car battery when the alternator is running in a 12V vehicle but this buck-boost can accept 24V too or you can use a buck converter with the 24V vehicles.
LiFePO4 (not Li-Ion/LiPo) battery pack (supports UPS like functionality) and has a capacity around 80WH (haven't done a capacity test yet).
https://www.amazon.com/gp/B07YRZYLKV
Buck-boost converter with a voltage limit of 14.6v and a current limit of 2A is used as a charger. According the manufacturer the battery pack can be charged at 4A and has a built in BMS to prevent overcharging. Prefer to limit the charging current to around 3A (0.5C).
https://www.amazon.com/gp/B07VNDGFT6
An electronic load drawing 2A is emulating the camera load.
Charging at 2A with the buck-boost converter. A programmable DC power supply (14.7v) emulates the car battery when the alternator is running in a 12V vehicle but this buck-boost can accept 24V too or you can use a buck converter with the 24V vehicles.
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