Test
Voltage, internal resistance, SOC and SOH within five seconds — enough to pull a suspect pack out of a string before it takes the rest down.
Battery Test
BM200
BM200 battery service instrument — 200W, 2–30V / 2–100Ah range, measuring voltage, internal resistance, SOC, SOH and true capacity (Ah).
OUTPUT 2–32VCURRENT up to 30APOWER 200W maxCERT CE
CEIndustrial Grade
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Five seconds to check.
Hours to prove it.
The BM200 integrates battery testing, charging, discharging and maintenance in one portable instrument. A 5-second fast test reports voltage, internal resistance, SOC and SOH; a full constant-current discharge measures true capacity in Ah and records the discharge curve. Packs that have been idle or float-charged for more than six months can be run through an automatic maintenance cycle to recover active capacity. RS485 and the BM_Client application put all four modes on a PC, log one row per minute, and cascade several units so each battery in a string is measured by address.
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01
Test & MeasurementNot just a
Not just a
voltage reading.
What the instrument tells you about a pack — and how fast it tells you. A 5-second test reports voltage, internal resistance, SOC and SOH — and a full constant-current discharge measures what the pack actually holds, in Ah.
5 s
Fast test
4
Functions
2–100 Ah
Pack capacity
±1.0% / ±2.5%
Test precision
- Voltage
- Internal resistance
- SOC — state of charge
- SOH — state of health
- True capacity (Ah)
- Charge & discharge curves
02
Four functions, one instrumentTest. Charge.
Test. Charge.
Discharge. Maintain.
Charge
Set the constant current and the voltage limit yourself, or let the BM200 apply defaults from the pack label. The charging curve is recorded on screen.
Discharge
Set a constant discharge current and a cut-off voltage. What comes out is the true capacity in Ah — not an estimate from a voltage table.
Maintain
Packs idle or float-charged for over six months run through an automatic recovery cycle that restores active capacity — and it is what makes the SOC and SOH readings exact.
The five-second test reads SOC and SOH off lookup tables, so treat it as a screen, not a verdict. Run a discharge or a maintenance cycle when the number has to be right — the BM200 is built to do both.
03
RS485 · BM_Client · CascadeOne PC.
One PC.
A whole battery bank.
- Four modes from one PCBM_Client over RS485 runs quick test, charge, discharge and maintenance remotely, and can pause and resume a cycle mid-run.
- One logged row per minuteVoltage, current, capacity, internal resistance, SOC, SOH and the live curve are written to a dated table as the cycle runs, so a test is a file you can hand over.
- Cascade a whole bankChain several units on one 485 bus and BM_Client lists every battery by device address — internal resistance and capacity measured cell by cell across a multi-string pack.
- Bluetooth from a phoneThe -B model pairs over BLE with the Android BM** APP, which shows the same logged history and curves and sets the pack parameters from a phone or tablet — RS485 stays the default path for a PC.
04
Seven-layer protectionSeven layers.
Seven layers.
Nothing gets through.
Short circuit, reverse or wrong connection, over voltage, over current, over load and over temperature are each watched on their own layer, so the pack under test stays protected — on the bench or in the field.
- Short circuit
- Reverse connection
- Wrong connection
- Over voltage
- Over current
- Over load
- Over temperature
05
SpecificationsEvery detail,
Every detail,
spelled out.
- Measures
- Voltage · Internal resistance · SOC · SOH · True capacity (Ah) · Charge & discharge curves
- Precision
- Voltage ±1.0% · Current ±2.5% · Capacity ±2.5%
- Output
- Charge 2.0~32.0V / 1~10A (200W max) · Discharge 1~6A (90W max)
- Input
- AC 100~240V 50Hz
- Comms
- RS485 (-D, default) · Bluetooth (-B) · Multi-unit cascade
- Protection
- Short circuit · Reverse connection · Wrong connection · Over voltage · Over current · Over load · Over temperature
- Safety
- CE, EN62368, EN61000
- Size & weight
- 240 × 115 × 65mm / 1.5kg
Key specifications shown — the datasheet carries the full tables.
06
Compare models
Find your tester.
Model codes: (-32) BM200-32 · (-05) BM200-05
Bench & line integration · Shenzhen
Need it customized?
Tell us how many channels you need, how the units should cascade, and what your PC side has to talk to — we'll fit the BM200 to your test bench, or build the instrument around your protocol.