DC Input 12/24V Output UPS
Ibex Manufacturing, Inc.

S12UPS-3_0!12DC

S12UPS-3.0/12DC $176 (1-4)
This is a complete DC to DC uninterruptible power source (UPS) with a 5Ah 12V SLA battery. It's designed to be powered by a DC source from an automotive, truck, or aircraft battery system, or a solar panel, and operates at ambient temperatures from -40C to +60C.
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PCB-S12UPS-3.0/12DC $91 (1-4)
This is the charger/controller PCB from the S12UPS-3.0/12DC unit. The PCB mounts on four 3/16" (minimum) user-supplied standoffs and is connected to a user-supplied 12V SLA battery (5Ah or larger).

This allows the user to specify a larger battery for a longer discharge time. Also, the cost is considerably less. -40C to +65C ambient temperature rating (read the electrical specs.)
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PCB-S12UPS-3_0

PCB-S12UPS-3_0

PCB-S24UPS-3.0/24DC $91 (1-4)
This is similar to the PCB-S12UPS-3.0/12DC but with components for 24V operation. The PCB mounts on four 3/16" (minimum) user-supplied standoffs and is connected to a user-supplied 24V SLA battery (3Ah or larger).

This allows the user to specify a larger battery for a longer discharge time. Also, the cost is considerably less. -40C to +65C ambient temperature rating (read the electrical specs.)
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Cable18-S12UPS-3.0 $23 ($29)
Cable30-S12UPS-3.0 $26 ($32)
The S12UPS-3.0/12DC is shipped with an unwired mating connector. These pre-wired cable assemlies have optional lengths and offer convenience. Order separately or with a UPS at a reduced price.
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Cable Assembly