Converter dc to dc battery for smart string lights. Will this work?

[sittinguphigh]

I found this Dc to DC converter. Using 4 smart strings with a 4 port hub. Is 15.5 volts to much?
The battery I'm looking at is 12.8 volts to 14.4 volts at 40 amps.

16A
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Model
IDC-200A-12
16 Amps
Design Features
- Fully isolated
- Short circuit protected
- Current limited
- 2 year warranty
Applications
- Earth moving equipment
- Heavy trucks
- Buses
- Marine vehicles
- CB radios
- 12 or 24 Volt lighting systems
- AM / FM sound systems
DC-DC Step Up
Converters
2 YEAR WARRANTY
Note: Specifications are subject to change without notice
* The output current indicated is the maximum current at the maximum input voltage
Model No. IDC-200A-12
INPUT
Input VOLTAGE RANGE 9 -18 VDC
output VOLTAGE 12.5 VDC
Output CURRENT* 16 A
iNPUT to oUTPUT iSOLATION Yes. > 400 V RMS
oUTPUT Ripple & NOISE < 50 V RMS
PEAK Efficiency 85%
Cooling By temperature controlled fan
Operating temperature -20oC to +30oC, De-rate linearly to zero at 70oC
hUMIDITY (Non-condensing) Max 95%
Protections
Overload / short circuit on the output side, over voltage on the output
side, over voltage / transients on the input side, reverse polarity on the
input side, over heating
FUSE
SPECIFICATIONS
eXTERNAL input SIDE Fuse
(Inline with “input +” terminal)
32 V, 30 A
eXTERNAL OUTput SIDE Fuse
(Inline with “output +” terminal)
32 V, 20 A
WIRE SIZE
Input WIRE (Up to 6 ft) AWG # 6
output WIRE (Up to 10 ft) AWG # 6
SAFETY & EMC
Emission EN50081-1 / EN61000-6-3
Immunity EN50082-1 / EN61000-6-1
Automotive 95 / 54 / EC
GENERAL
Input / Output connections Quick connect male 6.3mm / ¼” flat blade
Dimensions, mm (L x w x H) 176 x 88 x 50
Dimensions, INches (L x w x H) 6.9 x 3.5 x 1.9
Weight, KG 0.6
Weight, LB 1.4

Thanks

Mort