Baseus CRJS04 Super Energy Max Car Jump Starter 20000mAh
৳15690
৳9900
37% OFF
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The Baseus CRJS04 Super Energy Max is a 20000mAh portable car jump starter that delivers 2000A peak current and 1000A starting current for 12V vehicles. It supports gasoline engines up to 8.0L and diesel engines up to 4.0L, runs in temperatures as low as -20°C, and doubles as a 42W power bank with dual USB outputs. Compact at 772.4g, it handles up to 60 jumpstarts per full charge.
Baseus CRJS04 jump starter: Key takeaways
- 2000A peak current: handles up to 8.0L gasoline and 4.0L diesel engines.
- 20000mAh capacity: rated output 13000mAh, up to 60 jumpstarts per charge.
- 42W dual USB output: charges phones and tablets alongside jumpstarting.
- Cold weather ready: operates at temperatures as low as -20°C.
- 2-year standby: stays ready in a glove box when fully charged.
Baseus CRJS04 Jump Starter — 20000mAh Power for 12V Vehicles
The Baseus CRJS04 jump starter answers a simple question: can one device restart a dead battery and still charge a phone on the same trip? The 20000mAh lithium polymer cell delivers 1000A of starting current and 2000A of peak current through the smart clamp, which is enough to crank 12V vehicles with up to 8.0L gasoline engines or 4.0L diesel engines. The 74Wh rated output sits inside an airline-friendly envelope for cabin baggage on most carriers, while the 772.4g net weight keeps the unit compact enough to live in a door pocket.
The unit pairs a 12V starting output with two USB ports — one supports 5V/3A, 9V/3A, and 12V/2.5A, the other delivers 5V/2.4A — for a total of 42W of shared power. Recharging the Baseus CRJS04 takes a few hours through the 5V/2A or 9V/2A input using the included cable and any standard USB-C or USB-A wall adapter.
Key Features
- 2000A peak current with 1000A starting current: restarts 12V batteries quickly even when cells are deeply discharged.
- 20000mAh lithium polymer battery: rated output 13000mAh provides up to 60 jumpstarts on a single charge.
- Cold weather operation to -20°C: the internal cells and BMS remain functional for winter emergencies.
- Dual USB outputs at 42W total: 5V/3A, 9V/3A, and 12V/2.5A on the fast port plus 5V/2.4A on the second port.
- Smart clamp with reverse-polarity and spark protection: the included jumper cable prevents damage from incorrect hookup.
- 2-year standby time: a fully charged unit sits ready in the trunk without monthly top-ups.
Specifications
- Brand / Model: Baseus CRJS04 Super Energy Max
- Battery capacity: 20000mAh / 3.7V / 74Wh
- Rated output capacity: 13000mAh
- Starting voltage: 12V
- Starting current: 1000A
- Peak current: 2000A
- USB Output 1: 5V/3A, 9V/3A, 12V/2.5A
- USB Output 2: 5V/2.4A
- Total USB output: 42W
- Input: 5V/2A, 9V/2A (max)
- Operating temperature: -20°C and above
- Supported engines: up to 8.0L gasoline, up to 4.0L diesel
- Jumpstarts per charge: up to 60
- Standby time: up to 2 years
- Weight: 772.4g
Who Should Buy the Baseus CRJS04
The CRJS04 suits drivers of 12V cars, SUVs, light trucks, motorcycles, and small diesel pickups who want a backup plan for a dead battery without depending on roadside assistance. It also fits outdoor travelers and camper van owners who need a 42W power bank to keep phones and tablets running off-grid. Urban commuters in cold regions benefit from the -20°C operating range, while small workshop owners can use the unit as a portable diagnostic booster for cars parked overnight.
Use case 1: Daily commuter with a 1.5L sedan
Drivers in Dhaka who park on the street and return to a flat 12V battery can connect the smart clamps, wait for the indicator light, and start the car within seconds. After the jump, the same unit charges a phone through the 42W USB output during the ride home.
Use case 2: Weekend road trip in a 3.0L SUV
A 3.0L gasoline SUV sits well within the 8.0L supported range. Travelers leaving the city can pack the CRJS04 alongside tire inflators and emergency lights without adding meaningful weight to the cargo area.
Use case 3: Light-duty diesel pickup
Owners of 2.5L to 4.0L diesel pickups can rely on the 1000A starting current for cold morning starts. The reverse-polarity protection on the included smart clamp guards vehicles with battery terminals in less common positions.
Use case 4: Camping and overlanding
The Baseus CRJS04 doubles as a 42W power bank for lights, fans, and phones during multi-day camping trips. The lithium polymer chemistry keeps the weight manageable at 772.4g and the standby time at up to 2 years means it can sit in a storage bin between trips.
How to Use the Baseus CRJS04 Safely
Switch the unit on, connect the smart clamp to the jumper port, attach the red clamp to the positive terminal and the black clamp to a clean chassis ground, then attempt to start the vehicle. The clamp carries reverse-polarity, short-circuit, and over-temperature protection. After a successful start, disconnect the clamp, switch the unit off, and recharge through the 5V/2A or 9V/2A input. Avoid jumpstarting damaged or swollen batteries, and store the unit between 0°C and 40°C for the longest cell life.
What's Included
- Baseus CRJS04 Super Energy Max jump starter
- Smart jumper clamp with safety circuitry
- USB-A to USB-C charging cable
- Carry pouch
- User manual
- 2000A peak current with 1000A starting current for reliable 12V jump starts
- 20000mAh lithium polymer battery delivers up to 60 jumpstarts per charge
- Operates down to -20°C for winter roadside emergencies
- Dual USB outputs at 42W total power for phones, tablets, and accessories
- Supports gasoline engines up to 8.0L and diesel engines up to 4.0L
- Smart jumper clamp with reverse-polarity and short-circuit protection
- 2-year standby time when fully charged
- Compact 772.4g design fits in a glove box or door pocket
| Brand | Baseus |
|---|---|
| Model | CRJS04 |
| Battery capacity | 20000mAh / 3.7V / 74Wh |
| Rated output capacity | 13000mAh |
| Starting voltage | 12V |
| Starting current | 1000A |
| Peak current | 2000A |
| USB output 1 | 5V/3A, 9V/3A, 12V/2.5A |
| USB output 2 | 5V/2.4A |
| Total USB output | 42W |
| Input | 5V/2A, 9V/2A (max) |
| Supported gasoline engines | up to 8.0L |
| Supported diesel engines | up to 4.0L |
| Operating temperature | -20°C to 60°C |
| Jumpstarts per charge | up to 60 |
| Standby time | up to 2 years |
| Weight | 772.4g |
- Full refund available
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- Yes. The Baseus CRJS04 produces 1000A of starting current and 2000A of peak current, which is enough to crank 12V diesel engines up to 4.0L. The smart jumper clamp includes reverse-polarity, short-circuit, and over-temperature protection for safe connections on diesel pickups, SUVs, and light commercial vehicles.
- The 20000mAh lithium polymer cell supports up to 60 jumpstarts per full charge on a single 12V vehicle. Real-world count depends on engine size, ambient temperature, and how deeply the vehicle battery is discharged, but small commuter cars typically see the upper end of that range.
- The Baseus CRJS04 jump starter is rated for operation down to -20°C, making it suitable for winter emergencies and early-morning starts. The internal battery management system manages cell temperature to protect capacity, and the unit is best stored between 0°C and 40°C for the longest service life.
- Yes. The Baseus CRJS04 works as a 42W power bank with two USB ports. The fast port supports 5V/3A, 9V/3A, and 12V/2.5A for modern smartphones, while the second port delivers 5V/2.4A for tablets, e-readers, and accessories. Both ports can run at the same time when the unit is not jumpstarting.
- The Baseus CRJS04 is designed for 12V vehicles only, including gasoline cars and SUVs up to 8.0L, diesel engines up to 4.0L, motorcycles, ATVs, and small boats with a 12V electrical system. It is not intended for 24V trucks, heavy machinery, or vehicles with damaged or swollen batteries.
- The Baseus CRJS04 accepts 5V/2A or 9V/2A input through the included cable and recharges in roughly 6 to 8 hours from a standard USB wall adapter. Using a 9V/2A source shortens the cycle compared with a 5V phone charger. The unit holds up to 2 years of standby time once topped up.
- The Baseus CRJS04 uses a lithium polymer cell rated from -20°C up to 60°C during storage, so short periods inside a parked car are acceptable. For long-term storage, keep the unit in a glove box or carry pouch at room temperature, and avoid leaving it on a dashboard under direct sunlight for extended periods.
- Starting current is the steady current the Baseus CRJS04 delivers to crank the engine, rated at 1000A. Peak current is the brief surge the unit can supply at the moment the starter motor turns over, rated at 2000A. Both figures matter: starting current sustains the crank, while peak current breaks through the initial load on a deeply discharged battery.
Related in this store
- Baseus Super Energy Air jump starter— Same Baseus Super Energy line, complementary 1000A 12V booster for smaller budgets.
- Baseus Super Energy Pro jump starter— Alternative Baseus jump starter option for shoppers comparing capacity and price.
- Baseus 30W retractable car charger— Complements the CRJS04 for road trips — keeps phones topped up while driving.
- Baseus Share Together PPS car charger— Multi-port fast car charger for drivers who want extra in-vehicle charging alongside the jump starter.
- Baseus car vacuum cleaner— Adds interior cleaning to the roadside emergency kit built around the CRJS04.
- Xiaomi Mijia tire inflator pump— Pairs naturally with a jump starter for complete roadside emergency preparedness.
- Baseus backseat car holder— Useful for passengers charging phones via the CRJS04 on long drives.
- Baseus car air freshener— Small add-on for drivers building out their Baseus car care bundle.
Sources
- Baseus official product page for CRJS04— Authoritative manufacturer source for current Baseus CRJS04 specifications and firmware notes.
- IATA lithium battery carry-on rules— Verifies the 74Wh Baseus CRJS04 falls within the under-100Wh cabin baggage allowance for flights.
- SAE International standards for 12V vehicle starting systems— Reference for how peak current and starting current apply to 12V automotive systems.
- NIST battery safety guidance for lithium polymer packs— Authoritative US standards body for lithium battery storage and handling safety.
Reviewed by Adatun Product Team, Lead Merchandiser — reviewed by our category experts