8.4V AA 2400mAh Ni-MH Rechargeable Battery Pack

Q: What is cycle‑life of this 8.4V AA 2400mAh Ni‑MH pack?

≥400 cycles tested following IEC61951‑2:2017 standard under 0.2C charge‑discharge test conditions for assembled battery pack.

Q: What is total internal resistance for 8.4V AA2400mAh battery pack?

≤315mΩ for whole assembled pack, measured at 1KHz AC under fully‑charged status.

Q: Can you customize wires, connectors and heat‑shrink housing for this 8.4V AA pack?

Yes. We support custom lead wires, JST/SM/KET/Tamiya connectors, heat‑shrink tube wrapping and polarity adjustment for OEM projects.

Q: What certificates can you provide for export of 8.4V AA Ni‑MH battery packs?

PPWR, CE, RoHS, REACH, MSDS and UN38.3 shipping documents can be supplied for global export orders.

Q: Are samples available for 8.4V AA 2400mAh Ni‑MH battery pack?

Samples can be arranged for performance validation, buyer shall cover the freight cost.

Description

Full Technical Specifications (WJ‑PACK‑7S‑AA2400J)

Parameter Item	Specification
Model Number	WJ‑PACK‑7S‑AA2400J
Nominal Voltage	8.4V (7pcs 1.2V AA Ni‑MH cells in series)
Rated Capacity	2400mAh (Minimum 2350mAh)
Nominal Energy	20.16Wh
Cell Configuration	7S‑1P (Seven standard AA Ni‑MH 2400mAh cells series‑welded)
Single Cell Dimension (D×H)	Φ14.5mm × 50.5mm
Pack Approx Weight	Approx 208g (without connector)
Whole‑Pack Internal Resistance (1kHz, full charged)	≤315 mΩ
IEC Cycle Life	≥400 cycles (IEC61951‑2:2017)
Max Continuous Discharge Current	2400mA (1C)
Standard Charge	240mA (0.1C), 16 hours
Fast Charge	720mA‑1200mA with ‑ΔV / temperature cut‑off control
Discharge Temperature Range	-10℃ ~ +55℃
Short‑term Storage Temperature (<30 days)	-20℃ ~ +55℃
Pack Cut‑off Discharge Voltage	7.0V (1.0V per single cell)
28‑day Self‑discharge Retention	≥60% capacity @20℃ ambient
Certifications & Shipping Documents	PPWR, CE, RoHS, REACH, MSDS, UN38.3 available

Core Performance Advantages

≥400 IEC standard cycles: Assembled from grade‑A WJ‑H‑AA2400J cells, pass IEC61951‑2‑2017 cycle test for RC hobby and portable industrial equipment.
7S series 8.4V finished AA battery pack: Factory spot‑welded seven AA‑2400mAh cells, stable 8.4V rated output for RC models and replacement‑device projects.
Strict cell matching process: Capacity, internal‑resistance and open‑circuit voltage sorted before spot‑welding, minimize voltage drift under continuous‑load working conditions.
Reliable 1C discharge capability: Good performance for medium‑current RC models, portable instruments and standby power applications.
Wide working temperature: Discharge range from‑10℃ up to +55℃, fit indoor equipment and mild outdoor operating scenarios.
Flexible OEM options: Custom flying leads, Tamiya/JST/SM/KET connectors, heat‑shrink sleeve wrapping, polarity adjustment and private label printing.

Performance Characteristic Curves

1.0C Rate Charging Curves

0.1C‑1.0C Multi‑Rate Charging Curves

0.2C / 0.5C / 1C Discharging Curves

Storage & Self‑Discharge Retention Curves

OEM Custom Battery‑Pack Service

We provide OEM & ODM finished‑pack assembly service for WJ‑PACK‑7S‑AA2400J 8.4V Ni‑MH battery. We support grade‑A cell sorting, spot‑weld inter‑cell tabs, different gauge flying leads, multiple industry‑standard connectors (Tamiya, JST‑PH, SM, KET), heat‑shrink tube insulation, custom polarity and private label printing. Suitable for RC‑model replacement, portable instrument upgrade and new‑product‑development projects.

8.4V AA Ni‑MH battery pack assembly and QC workflow

Typical Application Scenarios

This 8.4V AA 2400mAh series Ni‑MH battery pack is widely applied for RC hobby models, portable test instruments, garden power equipment, portable surveillance devices and portable standby power units.

RC car & hobby model power packs Portable test measuring instruments Garden robotic power equipment Portable surveillance devices Portable emergency lighting Portable industrial control modules

Frequently Asked Questions

Q1: What is cycle‑life of this 8.4V AA 2400mAh Ni‑MH pack?

A: ≥400 cycles tested following IEC61951‑2:2017 standard under 0.2C charge‑discharge test conditions for assembled battery pack.

Q2: What is total internal resistance for 8.4V AA2400mAh battery pack?

A: ≤315mΩ for whole assembled pack, measured at 1KHz AC under fully‑charged status.

Q3: Can you customize wires, connectors and heat‑shrink housing for this 8.4V AA pack?

A: Yes. We support custom lead wires, JST/SM/KET/Tamiya connectors, heat‑shrink tube wrapping and polarity adjustment for OEM projects.

Q4: What certificates can you provide for export of 8.4V AA Ni‑MH battery packs?

A: PPWR, CE, RoHS, REACH, MSDS and UN38.3 shipping documents can be supplied for global export orders.

Q5: Are samples available for 8.4V AA 2400mAh Ni‑MH battery pack?

A: Samples can be arranged for performance validation, buyer shall cover the freight cost.

Manufacturer & Certification Support

Weijiang Power manufactures this 8.4V AA Ni‑MH assembled battery pack with grade‑A original WJ‑H‑AA2400J Ni‑MH cells. In‑house cell‑sorting, spot‑welding and reliability‑testing laboratory support mass‑production and small‑batch OEM customization. Full set export‑ready certification & shipping documents for worldwide customers.

View All Certifications > Factory & Testing Lab Showcase >

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