CTEK RB 3000 Portable Battery Booster for Corvette Owners
The CTEK RB 3000 Portable Battery Booster, part number 40-625, is a rechargeable 12V jump starter for emergency starting assistance. For a Corvette, compatibility requires a non-hybrid gasoline vehicle with a suitable 12V lead-acid starting battery and compliance with its owner's manual. The RB 3000 delivers up to 3000A peak current and is rated for gasoline engines up to 8.0 liters. That displacement rating does not establish model-year or trim fitment, and the booster is not a battery charger or storage maintainer.
Choose the RB 3000 when you want a compact roadside jump starter without carrying the higher-capacity model's extra battery weight. It weighs about 0.40 lb less than the RB 4000 and has an approximately one-hour shorter recharge estimate with a suitable power supply. Both provide up to 1300A starting current. The RB 3000's 59.2Wh capacity makes the buying tradeoff clear: a lighter kit for occasional starting assistance, while the RB 4000 offers a larger energy reserve.
Product Details
- Current ratings: 3000A peak, up to 1300A starting, and 1980A maximum cranking. Peak current is not a cold-cranking-amp rating.
- Internal power pack: 59.2Wh rechargeable lithium-ion polymer battery; up to 30 starts per full charge, depending on the vehicle and conditions.
- USB connections: USB-C PD30W input/output and USB-A QC3.0 output for compatible electronics.
- Recharge time: Approximately 2.5 hours with a suitable power supply; the wall adapter is sold separately.
- Size and weight: 9.4 x 4.2 x 1.6 inches; approximately 2.27 lb including cables.
- Detachable leads: 0.25 m (9.84 inches); check the distance to your designated connection points.
- Included kit: One booster, detachable boost module and clamps, carrying case, USB-C-to-USB-C cable, USB-A-to-USB-C cable, and user guide.
- Warranty: Two-year limited warranty.
Benefits
- Roadside starting assistance: A portable battery booster lets you help restart a compatible Corvette without finding a donor vehicle.
- AGM battery support: Compatible lead-acid chemistry coverage includes AGM, helping owners choose a 12V jump starter for the battery actually installed.
- Low-light visibility: The built-in flashlight helps illuminate the connection area when checking the vehicle's designated jump points.
Important Notes
- Battery and vehicle safety: Never boost a hybrid or electric vehicle, a lithium vehicle battery, or a frozen or damaged battery.
- Connection procedure: Follow both manuals and use the vehicle's specified jump-start points.
- Weather protection: IP65 applies only when all interfaces are closed, not while connected for charging or jump-starting.
CORVETTE COMPATIBILITY
- Battery requirement: Compatible 12V lead-acid batteries: WET, MF, Ca/Ca, AGM, EFB, and GEL.
- Excluded configurations: Corvette E-Ray and ZR1X hybrids, lithium starting-battery conversions, and 6V electrical systems.
Why Buy This Product from Custom Corvette Accessories
At Custom Corvette Accessories, we're Corvette owners ourselves, and we offer one-on-one customer service to help you choose equipment for your car. Have a question about the CTEK RB 3000 40-625 and your Corvette's battery? Contact us for personal help before you order.
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✅ Free shipping items are available in the Continental US only.
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✅ Custom or backordered items ship as soon as available.
