Check your vehicle first. Confirm a 12V system and the engine reference. Starting results depend on battery health, temperature and setup.

Test documents ↗

A3 FEATURES

Power for the
moments that matter.

From a dead battery to a dark roadside, A3 keeps the essentials close. See how it fits, what it powers and what comes in the case.

2500A peak · 800A starting · 50+ starts* · compatible 12V systems
A3 jump starter connected in a vehicle engine bay
01 / STARTING SUPPORT

Start when the battery says no.

2500A peak / 800A starting current for compatible 12V vehicles. 50+ starts per charge under stated conditions.* Check the 8.0L Gas / 5.5L Diesel reference before connecting.

vehicle fit
A3 jump starter shown between icy and hot conditions
02 / ALL-SEASON READINESS

Ready when conditions change.

−20°C to 60°C discharge range. Battery condition, vehicle fit and connection setup still affect results.

temperature range
A3 USB-C PD60W power delivery on the roadside
03 / POWER DELIVERY

Keep your gear moving.

USB-C PD60W input and output, plus USB-A outputs, for compatible devices on the road.

device power
A3 portable jump starter shown with vehicle dimensions
04 / PORTABLE DESIGN

Carry-ready, without the bulk.

21 × 9 × 3.5 cm and 0.77 kg. The ABS + aluminum-alloy body stays easy to stow in an emergency kit.

compact carry
A3 intelligent clamp controller, status light and red and black jumper clamps
05 / SMART-CLAMP CONTROL

Connect with more confidence.

Smart-clamp status indicators plus reverse-polarity, short-circuit and connection protection help you check the setup before starting.

smart-clamp control

Useful beyond the next start.

Know your power

Battery percentage and input/output information on the screen. Connection status on the smart clamp.

See the display ↗
USB-C works both ways

Recharge A3 or power compatible devices with PD60W input and output.

See charging details ↗
Light for the roadside

150 lm for low-light tasks, with steady, strobe and SOS modes.

See light modes ↗

Specifications

The details, by category.

Starting performance, charging and physical fit for the A3 / CY-A3 model.

Starting performance6 details
Vehicle system
12V
Engine fit
Up to 8.0L Gas / 5.5L Diesel
Peak current
2500A Peak
Starting current
800A Starting
Rated capacity / energy
16,000mAh / 59.2Wh
Starts per full charge
50+ starts*
Charging, light & protection4 details
USB-C
PD60W input / output
USB-A
Device-charging outputs
Emergency light
150 lm · steady, strobe, SOS
Smart clamps
Status indicators, reverse-polarity and short-circuit protection
Construction & operating range4 details
Body
ABS + aluminum alloy
Dimensions
21 × 9 × 3.5 cm
Net weight
0.77 kg / 1.7 lb
Discharge temperature
−20°C to 60°C

*50+ starts is the stated capability per full charge. Actual results vary with engine size, vehicle battery condition, temperature, remaining charge and connection setup.

In the box

One case. Your essential kit.

A3 unit, smart clamps, USB-C cable and EVA case
  • A3 jump starter×1
  • Intelligent jumper clamps×1
  • PD60W USB-C cable×1
  • EVA carry case×1
  • User manual×1

Keep the clamps, cable and A3 together in the carry case. Read the supplied manual before first use.

Support & certificates

Help, from first use onward.

Find the next step for setup, delivery or a problem with your order.

Starting help

Before your first start

Charge A3 to at least 50%. Confirm a compatible 12V vehicle battery, identify the positive and negative terminals, and follow the clamp connection sequence in the manual.

Open the A3 manual ↗
The vehicle still won’t start

Wait at least one minute between attempts. Stop after three unsuccessful attempts and follow the manual for disconnection. Repeated cranking can damage the unit; the vehicle battery or another fault may need attention.

Get help with setup ↗
A connection or clamp warning

Stop and check the clamp indication against the manual before another attempt. Do not bypass the clamp protections. Send us the vehicle details, A3 battery percentage and a photo of the clamp indication so we can help review the setup.

Contact product support ↗
Need a hand with your A3?

For fit, setup or an issue after delivery, email your order number (if available), vehicle details and a short description.

info@suntneew.com ↗

Delivery & returns

U.S. warehouse delivery. U.S. free shipping.

Free Standard shipping from our U.S. warehouses to the contiguous 48 states and Washington, DC. Order processing: 2 business days. Transit after dispatch: 2–5 business days (Monday–Friday).

Shipping & delivery ↗
Request a return within 14 days of delivery.

Contact us for approval and the correct return instructions before sending anything back.

Return conditions ↗
Arrived damaged, defective or incorrect?

Send your order number and clear photos. Under our return policy, we cover return shipping for these issues.

Get order help ↗
A3 test certificates & documents ↗

From checkout to first use.

Select a step for details.

Your order confirmation

Keep your confirmation email and order number. They make delivery questions and support easier to resolve.

Order questions ↗
PayPal & Oceanpayment Available at checkout
PayPal

Eligible purchases may qualify for PayPal Purchase Protection. Coverage and conditions are set by PayPal.

PayPal protection terms ↗
Oceanpayment

Approved refunds can be processed in full or in part through Oceanpayment. Bank processing times vary.

Oceanpayment refund process ↗
Our return & refund conditions ↗

Documents

Read the guide. See the reports.

Current operating instructions and original test documents for A3 / CY-A3.

A3 operating guideCY-A3 · Current operating guide · English
Open manual ↗

A3 is the product name; CY-A3 is the model designation used in the product and test documents. The UL2743 file is a test report, not a UL Listing.

FAQ

A few things
before you go.

Vehicle fit, everyday use and what to do if you need help.

Ask a product question ↗
Will A3 work with my vehicle?

A3 is for compatible 12V vehicle systems, with an engine reference of up to 8.0L Gas / 5.5L Diesel. Battery condition, temperature and engine condition affect starting. Use the Vehicle Fit Check and follow the product and vehicle instructions.

What do 2500A Peak and 800A Starting mean?

2500A Peak is the brief maximum output. 800A Starting is the rated starting current. Peak current is not continuous output; the vehicle and battery condition still affect the result.

How many starts can I expect from one charge?

50+ starts is the stated capability per full charge. Your actual number of starts depends on the engine, vehicle battery, temperature, remaining charge and connection setup.

What if the vehicle still won’t start?

Wait at least one minute between attempts and stop after three unsuccessful attempts. Follow the manual for disconnection and check the vehicle battery. See starting help or contact us with your vehicle details and clamp status.

Can A3 charge my USB-C devices?

The USB-C port supports PD60W input and output. Check your device’s power requirements and use a compatible USB-C PD cable. USB-A outputs are also included.

What happens if my order arrives damaged or incorrect?

Email info@suntneew.com with your order number and clear photos so we can review the issue and provide instructions. Under our return policy, we cover return shipping for items that arrive damaged, defective or incorrect. Read the return policy.

What comes in the case?

The kit includes the A3 unit, intelligent jumper clamps, a PD60W USB-C cable, an EVA carry case and a user manual. See In the box for the full list.

Why do the documents say CY-A3?

A3 is the product name. CY-A3 is its model designation in the product and test documents.

Customer reviews

Experiences with A3.

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Experiences from A3 owners.

Customer reviews appear here when available.

Ask about A3 ↗

A3. Ready to ride along.

Jump-starting, PD60W charging and emergency light in one compact carry kit.

$79.99
SuntNeew A3 jump starter kit