EJ-BC21 Battery Coulomb Counter Meter Battery Capacity Indicator Ammeter Voltmeter for E-bike Li-ion

//EJ-BC21 Battery Coulomb Counter Meter Battery Capacity Indicator Ammeter Voltmeter for E-bike Li-ion
EJ-BC21 Battery Coulomb Counter Meter Battery Capacity Indicator Ammeter Voltmeter for E-bike Li-ion

Project Description

Product overviews:

EJ-FG21 is a kind of high precision current type battery capacity meter, which can test the voltage, current and capacity of battery to help users know the state of the battery in real time. it has the function of memory and suitable for mobile and portable equipment, electro-mobile, balance cars, cleaning machines, instruments, measuring equipment etc…

Applicable specification:

EJ-FG21 is suitable for lithium batteries, lithium iron phosphate batteries, lead-acid batteries, and nickel metal hydride batteries which voltage is from 8V to 80V.

Dimension:

ej-bc21 battery monitor dimension

Connection method:

It needs a shielded wire and an ordinary wire(0.3~0.75mm²) One end of the ordinary wire connects to positive, another end connects to B+ of the sampler. The B- of sampler connects to B- of the battery. P- of sampler connect to P- of output. The final is connecting sampler to coulometer by the shielded wire.

Connection diagram of 50A shunt

ej-bc21 with 50A shunt

Connection diagram of 100A & 350A shunt

ej-bc21 with 100A 350A shunt

Parameter
Min
Type
Max
Unit
Working voltage
8.0
80.0
V
Working dissipation
10.0
12.0
mA
Standby dissipation
0.5
0.8
mA
Sleep dissipation
50.0
60.0
uA
Capacity accuracy
±2.0
Voltage accuracy
±2.0
Current accuracy
±2.0
%
Backlight on current
40.0
50.0
mA
Backlight off current
30.0
40.0
mA
Preset capacity value
0.1
999.0
Ah
Current of 50A Sampler
50.0
75.0
A
Temperature range
0
20
35
Weight
70.0
g
Size
ø59*20
mm
Parameter
Min
Type
Max
Unit
Working voltage
8.0
80.0
V
Working dissipation
10.0
12.0
mA
Standby dissipation
0.5
0.8
mA
Sleep dissipation
50.0
60.0
uA
Capacity accuracy
±1.0
Voltage accuracy
±1.0
Current accuracy
±1.0
%
Backlight on current
40.0
50.0
mA
Backlight off current
30.0
40.0
mA
Capacity setting value
0.1
590
Ah
Sampler working current
150.0
A
Temperature range
0
20
35
Weight
135.0
g
Size
ø59*20
mm
Parameter
Min
Type
Max
Unit
Working voltage
8.0
80.0
V
Working dissipation
10.0
12.0
mA
Standby dissipation
0.5
0.8
mA
Sleep dissipation
50.0
60.0
uA
Capacity accuracy
±1.0
Voltage accuracy
±1.0
Current accuracy
±1.0
%
Backlight on current
40.0
50.0
mA
Backlight off current
30.0
40.0
mA
Capacity setting value
0.1
999
Ah
Sampler working current
50.0
500.0
A
Temperature range
0
20
35
Weight
65.0
g
Size
ø59*20
mm