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Page 4 of 8

3. Battery

When the input DC voltage is present, the TSP-BCMU360 unit will automatically charge the connected battery to a set end of battery

charge voltage level, factory set for 25ºC for lead-acid batteries, using a constant current charging method of 1A (typical). As the bat-

tery voltage approaches the end of battery charge voltage level, the current will decrease proportionality; this characteristic is shown in

Figure 1. The user can adjust the set end of battery charge voltage level by means of the “Battery Voltage Adjust” potentiometer.

Note: For Cycle Use (repeated charging and discharging of battery), it is recommended to use a charge current of 0.4CA or smal-

ler, therefore batteries with a capacity of 2.5Ah or less should not be used with this module.

The module also provides an input connector for a temperature compensation probe. If this probe is connected, the unit will automati-

cally compensate the end of battery charge voltage level depending on the measured temperature. The connection of the temperature

probe also negates the need to change the potentiometer to compensate for a new temperature. The battery end voltage compensation

curve is shown in

Figure 2. (Applicable to factory setting of 13.6V/ 25ºC)

3.1 Battery Protection

The TSP-BCMU360 module protects the connected battery against short circuit and overload by the means of a built in 40A fuse. This

fuse is a standard 40A blade type fuse, which is accessible from the front panel of the unit for ease of replacement should the fuse be

damaged during operation. The module also prevents deep discharge of the battery by disconnecting the battery from the load once

the voltage level of battery has dropped below a defined threshold. An early warning of this disconnection is given to the user by me-

ans of the BATT-OK signal

(see chapter 6). The BATT-OK signal will switch off when the battery voltage is roughly 1V above the deep

discharge threshold.

Function Specification (continued)

13.6V

1A

Figure 1 – Battery Charge Characteristics

Figure 2

13.0

13.2

13.4

13.6

13.8

14.0

14.2

14.4

14.6

14.8

15.0

-15-10

-5

05

10

15

20

25

30

35

40

45

50

[V]

[ºC]

Battery End of Charge Voltage with Temperature Sensor

End of Charge Voltage

Battery Controller Module

TSP-BCMU360 Series

360 Watt