7.4V Li-polymer MacBook A1237/A1245 battery with customizable capacity (2950mAh-5000mAh+), ‌no MOQ‌, and bulk discounts. Certified for safety and durability‌

Battery Type: Lithium polymer
Battery Cell Grade: A grade new cells
Condition: 100% brand new and compatible
Power: 40Wh
Cycle life: 500-1000 times
Standby time: 3~7 days
Voltage/Capacity: 7.4V/5400mAh

High-performance 7.4V Li-polymer laptop battery designed for ‌Apple MacBook Air 13″ A1237, A1245, A1304, MB003, MB940LL/A, MC233, MC234‌, and other compatible models. Key specifications:

  • Capacity‌: 2950mAh, 4000mAh, 5000mAh+ options (customizable)
  • Voltage‌: 7.4V (Li-polymer)
  • Certifications‌: CE, RoHS, FCC
  • Safety features‌: Overcharge/discharge protection, short-circuit prevention
  • Compatibility‌: Direct replacement for part numbers ‌A1245, 661-6605, 020-6350-A
  • MOQ‌: None (supports small/large bulk orders)
  • Pricing‌: ‌Factory-direct rates‌ for resellers, repair shops, and wholesalers‌.

Compatible models: MacBook Air 13″ A1237 MacBook Air 13″ MB003 MacBook Air 13″ MB003J/A MacBook Air 13″ MB003LL/A MacBook Air 13″ MB003TA/A MacBook Air 13″ MB003X/A MacBook Air 13″ MB003ZP/A MacBook Air 13″ Z0FS MacBook Air 13” MC233*/A MacBook Air 13” MC233CH/A MacBook Air 13” MC233LL/A MacBook Air 13” MC233TA/A MacBook Air 13” MC233X/A MacBook Air 13” MC233ZP/A MacBook Air 13” MC234*/A MacBook Air 13” MC234CH/A MacBook Air 13” MC234LL/A MacBook Air 13” MC234TA/A MacBook Air 13” MC234X/A MacBook Air 13” MC234ZP/A MacBook Air 13” MC503CH/A MacBook Air 13” MC503J/A MacBook Air 13” MC503LL/A MacBook Air 13” MC503TA/A MacBook Air 13” MC503X/A MacBook Air 13” MC503ZP/A MacBook Air 13” MC504J/A MacBook Air 13” MC504LL/A MacBook Air 13” MC504TA/A MacBook Air 13” MC504X/A

Battery serial number code:A1383,020-7149-A,020-7149-A10

Core Advantages

High Capacity

Utilize 100% brand new A grade battery cells. Capacity is higher than that of original battery. Battery Standby time lasts 2 hours above longer than that of original one.

Balder Power Baseboard (PCBA)
  • Balder Power PCBA: Utilize imported ICs, MOS, and other main components, low inner Resistance, mature technological process, high stability, and accurate voltameter.
  • Professional R&D team know well decoding, BQ and other software technology.
Long Cycle life, 100% Battery health
  • Cycle times: 600-800 times which means, if we recharge the battery one time per day it can be used for more than two years.
  • Using all different types of testing software to test the battery the testing result of battery health of our product is 100%
Low-temperature resistance
  • Utilize low-temperature resistance formula of electrolyte for the battery cells. The working temperature: -10 °C-50 °C.Under 0 °C the battery still can work.
  • discharge 90-95% of initial capacity around.
Direct OEM manufacturer
  • Experienced R&D and production management teams, excellent production crafts. High production capacity, fast lead time, stable stock, good technical support, timely products upgrading, best after-sales service.

Long Quality warranty

Defective rate: within 0.1%. 13-month Quality warranty.

Factory Tour

Our Certifications

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Contact information

Email: [email protected];

[email protected]

James Zhan (Mr)–General Manager

Tel/WhatsApp/Wechat:+86-13712040916

Address: Plant 202, Building B, Treasure Island Innovation Industrial Park, No. 120, Jinhe Road, Jinhe Community, Zhangmutou Town

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For supports or any questions:

Phone/Whatsapp/Wechat:

+86 13712040916

DongGuan, China

Plant 202, Building B, Treasure Island Innovation Industrial Park, No. 120, Jinhe Road, Jinhe Community, Zhangmutou Town