banner

Cordless Mixer OEM Supplier China: Battery-Powered Mixing for the Portable Kitchen Era

Table of Contents

A cordless mixer OEM supplier in China needs to solve the motor efficiency puzzle: how to deliver enough torque for mixing dough from a battery pack that weighs under 400 grams. The answer is BLDC motors, high-discharge lithium cells, and firmware that manages power delivery across the battery’s voltage curve.


The Cordless Mixer Market

Cordless kitchen appliances are the fastest-growing segment in small appliances. The global cordless kitchen appliance market was estimated at $12.8 billion in 2024, with a projected CAGR of 8.5% through 2030. Cordless mixers — both hand mixers and the mixing function of cordless hand blenders — benefit from the same battery technology that has transformed cordless vacuums and power tools.

Shenzhen Gainer Electrical Appliances, established in 2013 in Shenzhen’s Guangming District, has built its cordless product line around a common battery platform. The company’s 77+ patents include utility models for battery attachment mechanisms and BLDC motor control algorithms. Three cordless mixing products share the same battery ecosystem:

Cordless hand blender: 200W BLDC, 15,000 RPM, removable battery
Cordless hand mixer: 200W BLDC, 12,000 RPM, removable battery
Cordless chopper: 150W BLDC, 3,000 RPM, removable battery


The Battery Platform: One Battery, Multiple Products

Gainer’s removable battery pack is the foundation of the cordless ecosystem:

Configuration: 5S1P (5 cells in series, 1 parallel group)
Voltage: 18V nominal, 21V fully charged
Capacity: 2,500mAh (Samsung INR18650-25R) or 2,600mAh (LG INR18650-M26)
BMS: 5-cell balancing, over-charge, over-discharge, over-current, short-circuit, and thermal protection
Connection: Slide-lock mechanism with gold-plated contact pins
Charger: 21V/2A CC/CV, UL/CE certified, 80-100 minute charge time
Cycle life: 500+ cycles to 80% capacity

The removable battery design means:
1. Users can swap batteries for extended runtime
2. The battery can be sold as a spare accessory (additional revenue)
3. If the battery degrades, it’s replaceable without replacing the entire appliance
4. The same battery works across multiple products in the brand’s line


BLDC Motor: The Enabler

Universal motors (used in corded mixers) run on AC and are simple and cheap. But they are inefficient at partial load, generate significant heat, and can’t run on DC without an inverter. BLDC motors solve all three problems:

CharacteristicUniversal Motor (AC)BLDC Motor (DC)
Efficiency55-65%80-90%
Speed controlTriac (steps)PWM (smooth)
Noise80-85 dB65-72 dB
Lifespan300-500 hrs800-1,200 hrs

Gainer’s BLDC motor uses:
Stator: 6-slot, 0.35mm silicon steel laminations
Rotor: 4-pole, N35SH neodymium magnets (150°C rated)
Hall sensors: 3 sensors for rotor position feedback
Controller: 32-bit MCU with PWM, soft-start, constant-speed, and stall protection

The constant-speed feature is what makes the cordless mixer feel like a corded one. As battery voltage drops from 21V to 15V during use, the firmware increases PWM duty cycle to maintain the set RPM. Without this, the mixer would slow down as the battery drains.


Cordless Hand Mixer: Design and Performance

Weight and Balance

A cordless hand mixer is heavier than a corded version (battery adds 300-400g). The engineering challenge is to make it feel balanced in the hand, not front-heavy. Gainer’s design:

Battery position: Rear of the housing, behind the grip
Motor position: Above the grip, in line with the beater shafts
Balance point: Center of the grip area
Total weight: 1.4 kg with battery, 1.1 kg without

The rear-mounted battery acts as a counterweight to the beaters. When the mixer is resting on a bowl rim, the battery weight keeps it stable — it doesn’t tip forward.

Performance

No-load speed: 12,000 RPM (motor), 600-800 RPM (beaters)
Speed settings: 5 speeds + turbo
Runtime: 15-20 minutes at medium speed (mixing cake batter)
Dough capability: Soft doughs (pancake, muffin). Not for stiff bread dough — that requires a stand mixer.

Beaters

Wire beaters: 304 SS, 2.5mm diameter, chrome-plated
Dough hooks: 304 SS, 3.0mm diameter, spiral design
Eject: Single-button mechanical eject


Production and Quality

Gainer’s cordless products run on two dedicated production lines (Lines 5 and 6). The assembly process includes:

1. Motor assembly: Stator winding → rotor magnet insertion → Hall sensor mounting → balance test
2. Battery pack assembly: Cell sorting → spot welding → BMS soldering → charge/discharge test
3. Main assembly: Housing → motor → coupling → PCB → battery connector
4. 100% function test: Start, all speeds, turbo, abnormal noise, battery charge LED
5. Packaging: Color box, accessories, manual, charger

Total monthly capacity: 250,000+ units across all product lines. Cordless products account for 40-50% of output.


OEM Pricing for Cordless Mixers

Heat generationHighModerate
Battery compatibilityNo (needs inverter)Yes (native DC)
ProductFOB Price (3,000 units)MOQ
Cordless hand mixer (200W BLDC)$14-182,000
Cordless hand blender (200W BLDC)$14-182,000

The higher MOQ for cordless products (2,000 vs 1,000 for corded) is driven by battery cell minimum order quantities from Samsung and LG distributors.

Payment: 30% T/T deposit, 70% balance before shipment. Free logo design, packaging design, and product photography.


FAQ

Q: How long does a cordless mixer battery last?
A: 15-20 minutes of continuous mixing at medium speed. The battery is rated for 500+ charge cycles to 80% capacity. Gainer uses Samsung INR18650-25R or LG INR18650-M26 cells.

Q: Can I use the same battery across different cordless products?
A: Yes, if the products share the same battery platform. Gainer’s cordless hand blender, hand mixer, and chopper all use the same 18V removable battery pack.

Q: What certifications does Gainer’s cordless platform carry?
A: CE, GS, CB, RoHS, LFGB, ETL, and FDA. The battery pack is certified to IEC 62133 and UN 38.3. The charger is certified to EN 60335-2-29.

Q: What’s the MOQ for cordless mixer OEM?
A: 2,000 units per model. The higher MOQ is due to battery cell minimums. Payment: 30% T/T, 70% before shipment.

Q: Does Gainer offer the cordless mixer with a fixed battery?
A: Both options are available. Removable battery (slide-lock) is the recommended design for product longevity and accessory sales. Fixed battery is slightly cheaper but cannot be replaced by the user.


*Last updated: September 2025. For cordless mixer OEM specifications and pricing, contact Shenzhen Gainer Electrical Appliances.*


Battery Safety: IEC 62133 and UN 38.3

The battery pack in a cordless mixer is a lithium-ion energy storage device. It must pass two critical safety standards:

IEC 62133 (Safety of Secondary Lithium Cells and Batteries)

This standard is required for CE marking. Tests include:

Short circuit: The fully charged battery is short-circuited. Must not catch fire or explode within 24 hours.
Overcharge: The battery is charged at 2× the recommended current. Must not catch fire or explode.
Forced discharge: A single cell is discharged to 0V. Must not catch fire or explode.
Crush: The battery is crushed with a 13kN force. Must not catch fire or explode.
Impact: A 9.1kg weight is dropped on the battery from 610mm. Must not catch fire or explode.
Thermal abuse: The battery is heated to 130°C and held for 10 minutes. Must not catch fire or explode.

Gainer’s battery pack has passed all IEC 62133 tests at TÜV Rheinland. The BMS (Battery Management System) is the safety net — it prevents overcharge, over-discharge, and short circuit at the electronic level, before the cell reaches a dangerous condition.

UN 38.3 (Transport of Dangerous Goods)

This standard is required for shipping lithium batteries by air or sea. Tests include:

Altitude simulation: Simulates air transport at 15,000m (11.6 kPa)
Thermal test: -40°C to +75°C cycling
Vibration: Sine sweep 7-200 Hz
Shock: 150g peak acceleration

Gainer’s battery pack carries UN 38.3 test reports. The factory provides the MSDS (Material Safety Data Sheet) and UN 38.3 test summary with every battery shipment.

Motor Efficiency and Battery Runtime

The BLDC motor’s efficiency directly determines battery runtime. A 5% efficiency improvement means 5% longer runtime from the same battery. Gainer’s motor optimization:

Lamination thickness: 0.35mm silicon steel vs the industry standard 0.5mm. Thinner laminations reduce eddy current losses by 40% (eddy current loss is proportional to the square of lamination thickness).
Magnet grade: N35SH (150°C rated) vs standard N35 (80°C). The SH grade maintains magnetic flux at operating temperature, preventing performance degradation during extended use.
Air gap: 0.35mm between rotor and stator. Tighter gap increases magnetic flux density. Requires precision machining of bearing seats and rotor shaft.
Winding fill factor: 75% (ratio of copper area to slot area). Higher fill factor reduces resistance and I²R losses. For more, read Stand Mixer Factory China OEM.

These optimizations add $0.80-1.20 to the motor cost but improve runtime by 15-20% compared to a standard BLDC motor. For a cordless product, runtime is the number one user complaint — investing in motor efficiency reduces returns.

Charger Design and Safety

The charger is a separate appliance and must be certified independently:

Input: 100-240V AC, 50/60Hz (universal voltage)
Output: 21V DC, 2A (CC/CV charging profile)
Safety: EN 60335-2-29 (battery chargers), double-insulated (Class II)
Plug: EU (CEE 7/16), UK (BS 1363), US (NEMA 1-15), AU (AS/NZS 3112) — interchangeable
Protection: Over-current, over-voltage, short-circuit, reverse polarity

The charger uses a CC/CV (Constant Current / Constant Voltage) charging profile. During the CC phase, the charger delivers 2A until the battery reaches 21V. During the CV phase, the charger holds 21V and the current gradually decreases. When the current drops below 100mA, charging is complete. This profile maximizes battery life compared to simple constant-voltage charging. This connects to our guide on Best Kitchen Appliance OEM Manufacturers.

The Removable Battery Ecosystem

Gainer’s removable battery pack is designed as a platform — not a single-product component. The same battery works across:

– Cordless hand blender
– Cordless hand mixer
– Cordless chopper
– Portable blender Related: Cordless Hand Blender OEM.

This cross-product compatibility creates a brand ecosystem. A customer who buys the hand blender and then buys the hand mixer doesn’t need a second charger or battery system. The brand can sell spare batteries as accessories ($15-25 retail), generating additional revenue. The platform approach also reduces the brand’s inventory complexity — one battery SKU supports multiple products. See also: Food Mixer OEM Manufacturer.

Cynthia Jiang

Hi there! I’m the author of the post with over 5 years of expertise in the small kitchen appliances industry, I’m your go-to source for wholesale coconut bowls and related items. Got questions or ready to start wholesaling? I’m here to help every step of the way—just ask!

request a free quote

Send us a message and have a chance to get free an industry research report, Shenzhen travel guide and free quote. We will be back to you ASAP!

Tel: 86 – 15818554662

Wechat: 15818554662

Email: [email protected]

Address: Building 5,101-401,6 whole building, Yinjin Technology Industrial Park, Fengjing South Road, Matian street, Guangming District, Shenzhen, Guangdong, CN

Cordless chopper (150W BLDC)$12-152,000