Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
The ANCEL BS400 is a patented, battery-free supercapacitor engine starter designed for 12V vehicles. Unlike traditional car jump starters that rely on internal batteries, the ANCEL BS400 super capacitor jump starter uses pure physical charge transfer to deliver instant high-burst power. Permanently installed under the hood, it shares the cranking load with your battery at every start. This reduces battery stress, prevents voltage drops, and improves everyday starting reliability - not just in emergencies. With 1300A peak power, the BS400 supercapacitor jump starter starts any 12V vehicle up to 6.0L gas/diesel or 6.0T from -40F to 176F, including trucks, pickups, off-roaders, RVs, boats, and even dead or frozen batteries. The BS400 battery booster jump starter doesn't just fix breakdowns-it prevents them. The ANCEL super starter app gives you 24/7 battery monitoring - real-time voltage, level, temperature, start history, and early warnings. If needed, tap Force Start in the app from your seat without stepping outside. Once installed, the ANCEL super starter capacitor works automatically: detecting start-stop, handling deep discharges, and recharging while you drive. No pre-charging. No periodic checks. No maintenance. With IP65 waterproofing and full circuit protection, the BS400 car battery jump box stands up to rain, snow, dust, and engine bay conditions. Its the all-in-one protection system. You're never stranded. Always ready. Always reliable.
I was excited to get the Ancel BS400, but it arrived a week late, and the first time I used it, it didn’t work as expected. I had to keep fiddling with the connections. Maybe I just got a faulty unit, but I'm not too happy with this purchase.
M
Marcus Chen
Handy tool for jump-starting cars
The Ancel BS400 starter is a lifesaver! I’ve used it a couple of times already, and it really does work well for jump-starting. It's permanently connected, so no more searching for cables when my car battery dies. Just keep it charged, and you’re good to go!
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Isabella Gomez
Solid performance but a bit bulky
I like the Ancel BS400's proactive battery maintainer feature. It keeps my car battery healthy, but I found it a bit bulky to store in my trunk. Still, it definitely works when I need a jump start, so I'm satisfied with my purchase.
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Liam O’Connor
Set it and forget it
This jump starter is super easy to use. I’ve got it permanently connected to my car battery and haven’t had any issues since. However, I had to read the manual a couple of times to fully understand the setup, which was a bit annoying.
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Sofia Patel
A must-have for older cars
If you have an old car like mine, you need the Ancel BS400. The super capacitor is great for starting up when the battery is low. I just wish it didn’t take so long to charge up the unit itself after using it. Still, it's worth it!
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FAQs
Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
