Portable Battery Tester for Testing Compact Storage Batteries for Mobile Devices

SKU: 3555 Category:


Model No. (Order Code)


Note: The 3555 is unable to make PASS/FAIL judgments for lithium-ion batteries due to the extremely small magnitude of the changes in their internal resistance. For applications involving measurement of batteries with low internal resistance, for example lead acid batteries, use the BATTERY TESTER BT3554.



Hioki portable battery testers support the maintenance of UPS and storage batteries critical to the life support of all businesses. The 3551 is a 300 mΩ to 30 Ω/30V portable battery internal resistance tester suitable for testing high-capacity alkali and lead-acid storage batteries used in mobile devices.

Key Features

• For use with compact batteries such as NiCad and nickel-metal hydride
• Instantaneously diagnose degradation (PASS, CAUTION, FAIL) by measuring internal resistance and voltage
*Operator must input the criteria for PASS/FAIL judgments according to the type of battery being measured.


Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)

Resistance measurement range 300 mΩ (Max. display 300.00 mΩ, resolution 100 μΩ) to 30 Ω (Max. display 30.00 Ω, resolution 10 mΩ), 3 ranges
Accuracy: ±0.8 % rdg. ±6 dgt. (All ranges)
Testing source frequency: 1 kHz ±5 Hz, testing current: 5 mA (300 mΩ range), 500 μA (3 Ω range), 50 μA (30 Ω range)
Open-circut Voltage: 5 V peak
Voltage measurement range ± 3 V (Max. display ±3.000 V, resolution: 1 mV) to ± 30 V (Max. display ±30.00 V, resolution: 10 mV), 2 ranges
Accuracy: ±0.1 % rdg. ±6 dgt.
Absolute max. input voltage 50 V DC max. (No AC input)
Sampling rate 1.25 times/s (at resistance and voltage measurement combination)
Comparator functions Setting: Upper and lower limit for resistance, and lower limit for voltage, Number of comparator setting: 10 sets
Comparator output: Pass (green), Warning (amber), and Fail (red) LEDs, Audible output on warning or Fail
Other Data storage: N/A, Interface: N/A, Temperature measurement: N/A
Power supply LR6 (AA) Alkaline dry battery × 6, Continuous operating time: 18 h
Dimensions and mass 196 mm (7.72 in) W × 130 mm (5.12 in) H × 50 mm (1.97 in) D, 680 g (24.0 oz) (including batteries)
Accessories Pin Type Lead 9461 × 1, Instruction manual × 1, LR6 (AA) alkaline battery × 6


BATTERY HiTESTER 3550, 3551, 3555

Declaration of Conformity



Measurement leads

*The L2107, Z2002 are bundled with the RM3548 About lead length A: From junction to probe, B: Probe length, L: Overall length Note: For L2107, length “A” can be extended by roughly 0.8 m (2.62 ft) by cutting the binding tube. Length “A” for all other leads cannot be extended.



A:280 mm (11.02 in), B:118 mm (4.65 in), L:1360 mm (4.46 ft), 60V DC


For the L2100, 9465-10, 9465, 9461

There are no drivers, firmware or software available for this product.

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