CTEK RB 4000 Portable Battery Booster for Compatible Corvettes
The CTEK RB 4000 Portable Battery Booster, part number 40-624, supplies portable jump-start power for vehicles with compatible 12V lead-acid batteries. Its 4000A peak rating and 88.8Wh internal battery distinguish this model within the CTEK booster range. For a Corvette, suitability depends on the vehicle's battery chemistry, non-hybrid configuration, and approved jump-start procedure rather than its model year alone. Supplied as one complete booster kit, the RB 4000 combines a detachable clamp module, status display, integrated flashlight, USB charging connections, and protective carrying case.
The RB 4000 suits drivers who want extra stored energy in a roadside kit without moving to a larger housing. Its 88.8Wh battery provides 50% more energy than the RB 3000, although both models have the same published starting-current rating. That distinction helps you choose capacity rather than relying on the peak-amp number alone. The detachable clamp module and supplied case keep the equipment organized between trips.
Product Details
- Product identity: CTEK RB 4000, manufacturer part number 40-624.
- Current ratings: 4000A peak, up to 1300A starting current, and 2060A maximum cranking current. Peak output is not a cold-cranking-amp rating.
- Capacity and engine guidance: 88.8Wh internal battery; gasoline engines up to 10.0 liters and diesel engines up to 8.0 liters.
- USB power: USB-C PD30W input/output and USB-A QC3.0 output; approximately 3.5-hour recharge with a suitable power supply.
- Size and weight: 9.4 x 4.2 x 1.6 inches; approximately 2.67 lb including cables.
- Kit contents: 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
- Independent starting support: Bring starting power for a compatible vehicle without finding a donor vehicle.
- Low-light visibility: Illuminate the connection area with the built-in light.
- Device charging: Supply USB power to compatible phones and personal electronics away from an outlet.
- Charge-level checks: Read the status display before a trip so you can recharge the booster when needed.
Important Notes
- Battery requirements: Use only with 12V lead-acid batteries: WET, MF, Ca/Ca, AGM, EFB, and GEL. Never boost lithium vehicle batteries, hybrids, or electric vehicles.
- Safe connection: Follow both manuals and the vehicle's specified jump-start connection points. Never boost a frozen or damaged battery.
- Weather protection: IP65 applies only with all interfaces closed, not while connected for use.
- Charging equipment: The wall power adapter is sold separately. This jump starter does not replace a battery charger or storage maintainer.
CORVETTE COMPATIBILITY
- Before ordering: Confirm a compatible 12V lead-acid battery and non-hybrid vehicle; engine displacement alone does not establish compatibility.
- Excluded vehicles: Corvette E-Ray and ZR1X, lithium 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 accessories for your car. Have a question about the CTEK RB 4000 40-624 for your Corvette? Contact us with your model year, trim, and battery type for personal help before you order.
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