BTS 4000 - Advanced Battery Testing System

BTS 4000 has been served for the market for more than 10 years, providing the most reliability and flexibility for your battery testing activities.


Neware BTS 4000 Battery Tester
Capacity | Cycle Life | HPPC | DCR | Over-charge | Over-discharge
Neware BTS 4000 Battery Tester

Key Features

  • Market-proven battery testing system
  • Rapid response. ≤20ms typical response time. ≤1ms for models with current range lower than 12A
  • 0.05% Full-scale accuracy for current & voltage
  • 10Hz data acquisition frequency, 100Hz optional
  • 500ms minimum pulse width
  • Flexible integration of hardware and data management
  • Highly customizable, as for current&voltage ranges, battery clamps and other aspects

Powerful Conditional Syntax

Powerful Conditional Syntax of Neware BTS 4000 Battery Tester

Neware facilitates you to run some complex battery testing applications by our powerful conditional syntax with user definable variables

Neware Tuning

Neware has a solid R&D team to tune the battery testing system into its best state. BTS 4000 now dominates the market with continuious improvement through the past decade.
Accuracy drift of Neware BTS 4000 Battery Tester
Neware BTS 4000 Hardware Performance

Responses Faster.
Switches More Smoothly.

Neware BTS 4000 features with a response time of 10ms. And this value can be down to less than 1ms if the current range is lower than or equal to 12A (typical models will be 5V12A, 5V6A, 5V10mA, 5V20mA, 5V50mA).

And the swiching process(from rest to charge, charge to discharge, rest to discharge, or the other way) is much better than what most of our competitors provide.

Left is from Neware, right is from another supplier in the market.

Accurate Timing

Most of us are considering the voltage and current accuracies are the all important factors of a battery tester, but actually timing accuracy is of the same importance.

Capacity or energy is calculated on time basis with the voltage and current measured, thus the timing accuracy will greatly affect the capacity calculated. To a general constant current or other constant testing regimes, this effect may not that easy to be observed.

Left is from Neware, right is from another supplier in the market.

Timing of Neware BTS 4000 Battery Tester
Neware BTS 4000 Battery Tester



AC 110V±10% 220V±10% Single or three-phase, 50/60Hz
Input power varies with the output power


Voltage: 0.5% - 100% FSR (Full Scale Range, range from 5V to 60V)
Current: 0.5% - 100% FSR (Full Scale Range, range from 1mA to 3000A)

Resolution: 16bit

Data Acquisition
Frequency: 10Hz
Time Interval: 100ms to 60000 seconds
Voltage Interval: 0.2% -100% FSR
Current Interval: 0.2% -100% FSR

Response Time: 20ms. 1ms for current lower than 12A

Operation Mode
Charge: Constant Current, Constant Voltage, Constant Power
Discharge: Constant Current, Constant Power, Constant Resistance
Simulation: Constant Current, Constant Power
End Conditions: Voltage, Current, Step Time, Capacity, Energy and other defined variables

- Download Specifications