ANCEL BS300 Super Starter permanently installed jump starter system — 1000A surge, maintenance-free under-hood supercapacitor

ANCEL BS300 is a permanently installed super starter that automatically supports every engine start, supplying up to 1000A of instant assist to reduce battery strain and prevent no-start situations.

The ANCEL BS300 Super Starter is a vehicle-mounted, maintenance-free supercapacitor system designed to stay under your hood and help every engine crank more easily. Unlike portable jump packs that sit unused until an emergency, the BS300 remains connected to your vehicle battery and engages automatically at start-up, sharing the cranking load to extend battery life and improve cold-weather reliability. It pairs with a free companion app so you can monitor battery voltage, charge status, and device operation in real time.

How does the BS300 reduce wear on my vehicle battery?

By supplying a portion of the cranking current during every start, the BS300 decreases the demand on the main battery, reducing depth of discharge and cumulative stress. Over thousands of starts this lower load helps delay capacity loss and reduces the frequency of battery replacements.

• Provides 50%–100% of cranking assistance depending on conditions and vehicle
• Delivers up to 1000A surge current for rapid engine spin-up
• Supercapacitors accept fast recharge from your alternator after start
• Designed for up to 500,000 assist cycles with minimal degradation

What happens after installation — will it need maintenance or charging?

Once installed under the hood, the BS300 operates fully automatically and requires no user charging or routine maintenance. It wakes to support starts, recharges itself from the vehicle charging system, and returns to sleep until the next start cycle.

• Permanent under-hood installation — no removal required
• Zero user charging or maintenance tasks
• Automatically recharges from the vehicle alternator when needed
• Stable performance across -40°F to 176°F operating range

Is the BS300 safe to leave connected in all seasons and climates?

The BS300 uses maintenance-free supercapacitor cells and flame-retardant materials rather than lithium batteries, eliminating risks like swelling or thermal runaway. It is built to withstand extreme temperatures and routine vehicle use year-round.

• No lithium battery hazards — safe for permanent installation
• Flame-retardant enclosure and robust electrical design
• Operational from -40°F to 176°F for cold and hot climates
• Durable under long-term parking and seasonal storage conditions

How does the companion app help prevent surprises on the road?

The free ANCEL companion app connects to the BS300 to show battery voltage, state of charge, operating history, and real-time alerts. Early warnings let you act before minor battery issues become starting failures.

• Live voltage and charge-level monitoring on your phone
• Startup history and event logs for diagnostics
• Instant alerts when battery readings indicate attention needed
• Helps schedule maintenance before a roadside emergency

Who is this for: The ANCEL BS300 is ideal for drivers who want reliable starts without the fuss of portable jump packs — commuters, fleet vehicles, classic cars, and anyone operating in cold climates or who uses vehicles intermittently. It suits owners who prefer a set-and-forget solution to improve starting reliability, extend battery life, and gain remote visibility via a smartphone app. Professional installers and DIY-savvy users can fit the unit under the hood for permanent protection and peace of mind.