BMW 1 Series F20 Dash Cam Installation & Review

Solving Dash Cam Parking Mode Battery Drain on BMW 1 Series F20

Are you experiencing frequent battery drain issues on your BMW 118D (F20 chassis) due to dash cam parking mode? This is a common problem for drivers in areas like Busan, South Korea. This case study details how a dedicated dash cam auxiliary battery installation resolved this issue for a BMW 118D owner. The 180hp N47 2.0 diesel engine provides excellent performance and fuel economy, but a constantly draining battery can be a significant inconvenience.

The vehicle initially had a dash cam installed, but it was only functional while driving. After modifying the wiring to enable parking mode, the owner soon encountered severe battery drain, leading to complete discharge within days. This typically happens when a dash cam relies solely on the vehicle's main battery during parking, without a dedicated power source. The constant power draw quickly depletes the battery, especially when the engine is off.

Carecell 6A: The Solution for Continuous Parking Recording

The solution implemented was the Carecell 6A dash cam dedicated auxiliary battery. This unit is designed to provide stable power for parking mode recording. For a dual-channel dash cam setup, it offers approximately 25 hours of continuous recording after a mere 50-minute drive for charging. Its cost-effectiveness stems from a long charge-discharge cycle life and proven compatibility with vehicle electrical systems. Being purpose-built for dash cams, it delivers the precise power required without unnecessary overhead.

Proper wiring management is crucial to prevent issues like rattles and electrical noise. All exposed wires were meticulously wrapped with Tesa automotive tape. This not only ensures a clean installation but also provides sound dampening and insulation, protecting the wiring from vibration and potential damage.

Installation and Power Management in the Trunk

The auxiliary battery was installed in the trunk of the BMW 118D, adjacent to the main battery. It was securely fastened using Velcro tape to prevent any movement during driving, which could lead to loose connections or damage. The wiring from the auxiliary battery was also tidied with Tesa tape for a professional finish and enhanced durability.

The charging status of the auxiliary battery is indicated by a red LED light labeled 'CHARGING'. This light confirms that the battery is actively receiving power. The voltage typically starts around 12.8V and increases slightly when the engine is running. Upon full charge, it can reach approximately 14.7V. This voltage range indicates that the battery is sufficiently charged to power the dash cam during parking and will automatically recharge while driving if needed.

If the charging indicator light does not illuminate, it may signify an installation error or a faulty product. In such cases, it is essential to seek a professional inspection from the installer. While voltage checks seem straightforward, factors like wire contact integrity and fuse connections play a vital role in proper operation.