4.8V AA 1800mAh Ni‑MH Battery Pack

Q: What is cycle‑life of this 4.8V AA 1800mAh Ni‑MH pack?

≥500 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 4.8V AA1800mAh battery pack?

≤130mΩ for whole assembled pack, measured at 1KHz AC under fully‑charged status.

Q: Can you customize wires, connectors and heat‑shrink housing for this 4.8V 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 4.8V 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 4.8V AA 1800mAh Ni‑MH battery pack?

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

Description

Full Technical Specifications (WJ‑PACK‑4S‑AA1800)

Parameter Item	Specification
Model Number	WJ‑PACK‑4S‑AA1800
Nominal Voltage	4.8V (4pcs 1.2V AA Ni‑MH cells in series)
Rated Capacity	1800mAh (Minimum 1750mAh)
Nominal Energy	8.64Wh
Cell Configuration	4S‑1P (Four standard AA Ni‑MH 1800mAh cells series‑welded)
Single Cell Dimension (D×H)	Φ14.5mm × 50.5mm
Pack Approx Weight	Approx 112g (without connector)
Whole‑Pack Internal Resistance (1kHz, full charged)	≤130 mΩ
IEC Cycle Life	≥500 cycles (IEC61951‑2:2017)
Max Continuous Discharge Current	1800mA (1C)
Standard Charge	180mA (0.1C), 16 hours
Fast Charge	540mA‑900mA with ‑ΔV / temperature cut‑off control
Discharge Temperature Range	-10℃ ~ +55℃
Short‑term Storage Temperature (<30 days)	-20℃ ~ +55℃
Pack Cut‑off Discharge Voltage	4.0V (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

≥500 IEC standard cycles: Assembled from grade‑A WJ‑H‑AA1800P cells, pass IEC61951‑2‑2017 cycle test for industrial and portable electronic equipment.
4S series 4.8V finished AA battery pack: Factory spot‑welded four AA‑1800mAh cells, stable 4.8V output for replacement and original device projects.
Strict cell matching process: Capacity, internal‑resistance and open‑circuit voltage sorted before spot‑welding, minimize voltage drift during continuous discharge.
Reliable discharge performance: Good load‑holding capability for medium‑current portable devices, works well under variable‑load conditions.
Wide working temperature: Discharge range from‑10℃ up to +55℃, suitable for indoor equipment and mild outdoor operating conditions.
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‑4S‑AA1800 4.8V 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 device replacement, portable instrument upgrade and new product development projects.

4.8V AA Ni‑MH battery pack assembly and QC workflow

Typical Application Scenarios

This 4.8V AA 1800mAh series Ni‑MH battery pack is widely used for remote‑control toys, portable measuring instruments, alarm systems, handheld medical equipment and portable standby power units.

RC toy & model car power packs Portable test measuring instruments Fire alarm & security backup power Hand‑held medical devices Portable emergency lighting Industrial portable control modules

Frequently Asked Questions

Q1: What is cycle‑life of this 4.8V AA 1800mAh Ni‑MH pack?

A: ≥500 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 4.8V AA1800mAh battery pack?

A: ≤130mΩ for whole assembled pack, measured at 1KHz AC under fully‑charged status.

Q3: Can you customize wires, connectors and heat‑shrink housing for this 4.8V 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 4.8V 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 4.8V AA 1800mAh 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 4.8V AA Ni‑MH assembled battery pack with grade‑A original WJ‑H‑AA1800P 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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