The BG-8S is a multifunctional measuring instrument that allows testing the condition of most major battery packs: Li-Po, Li-ion, LiFe, LiHV, NiCd and NiMH. It also allows autonomous balancing of lithium packs to balance the voltage of individual cells to the same level. In servo signal test mode, it can be used to measure servo signal parameters at the receiver output - PWM for conventional servos and serial S.BUS. It can also function as a smart USB charger/power bank powered by a connected battery.

LITHIUM BATTERY VOLTAGE TESTING

The device allows the measurement of 2-8S lithium batteries (Li-Po, Li-ion, LiFe, LiHV) without the need for additional power supply. To test 1S batteries a power supply battery with a voltage higher than 5 V must be connected to the XT60i input socket. The battery under test is connected directly (packs with JST-XH service connectors) or with a suitable adapter.

The tester measures and displays:

• total battery voltage
• single cell voltage
• voltage difference between the highest and lowest cells voltage

NiCd AND NiMH BATTERIES VOLTAGE TESTING

No additional power supply is required when testing 4-10 cell NiCd and NiMH batteries. For testing NiCd and NiMH batteries with less than 4 cells a power supply battery with a voltage higher than 5 V must be connected to the XT60i input socket.

The tester measures and displays:

• total battery voltage

BALANCER (2-8S)

BG-8S allows autonomous balancing - the device discharges the cells of the pack to the level of the cell with the lowest voltage (the device is powered by the battery being discharged).

SERVO SIGNAL TESTER

To test the servo signal the corresponding output (channel) or S.BUS socket of the receiver is connected to the BG-8S with a three-wire servo cable in standard wiring so that the black (brown) wire (-) is connected to the contact of the tester/balancer socket (-). If the receiver supply voltage is less than 5.0 V an external power supply of at least 5 V must be connected to the XT60i input socket.

• PWM signal testing - width-modulated signal for conventional servos: When connected to the signal output from a PWM receiver, the BG-8S measures and displays the receiver supply voltage, frequency rate and signal pulse width, which it also displays as the relative magnitude of the servo angle in %.
• S.Bus signal testing - serial signal for S.Bus servos: When the serial S.BUS signal output from the BG-8S receiver is connected, it displays the relative magnitude of the servo angle in % and as a bar graph in up to 18 channels.

USB CHARGER

The BG-8S can also serve as a "field" USB charger/power bank powered by a battery connected to the XT60i socket - this is protected from over-discharge by the tester. The BG-8S allows charging of common devices (5V/max 2A) as well as smart fast charging of devices using Qualcomm Quick Charge 2.0/3.0 technology and is compatible with BC1.2 and Apple devices. Allows charging max 12V/2A.

The package contains: Tester BG-8S, screen cover, instructions.