Compact, no-frills modified sine wave inverter for RVs, work trucks, off-grid cabins, boats, and small solar systems.
The AIMS Power 1250 Watt 12V Modified Sine Inverter is a straightforward DC-to-AC power inverter that converts 12-volt battery power into 120V / 60Hz AC electricity. Designed for mobile and off-grid applications, it runs most standard appliances, power tools, pumps, and motors — all from your existing 12V vehicle or battery system. With a compact footprint, built-in thermal and overload protection, and over 90% efficiency, it delivers dependable everyday power without unnecessary complexity.
Clean, practical power conversion built around what matters most: continuous wattage, protection, and compact size.
Delivers a full 1,250 watts continuously, with 2,400 watts of surge capacity to handle the startup draw of motors and compressors without tripping the unit.
More than 90% DC-to-AC efficiency means less energy wasted as heat and longer run time from the same battery bank — important in any off-grid or mobile setup.
At just 3.3 lbs and 10.5" x 5.25" x 3.25", this inverter installs easily in tight spaces — truck consoles, RV compartments, boats, or tool cabinets — without crowding other equipment.
Two standard 120V AC outlets let you power multiple devices simultaneously, or use a power strip to expand access further when needed.
Over-temperature shutdown activates at 55°C (±5°C), overload protection cuts power before damage can occur, and most fault conditions reset automatically — no manual intervention required.
At idle, this inverter draws only 0.6 amps at 12.5V or higher — a very modest standby current that lets you leave it connected without significantly depleting your battery bank between uses.
| Continuous Power | 1,250 Watts |
|---|---|
| Surge Power | 2,400 Watts |
| Waveform | Modified Sine Wave |
| DC Input Voltage | 12V DC (operating range: 10–15V) |
|---|---|
| AC Output Voltage | 120V AC |
| Frequency | 60 Hz |
| Efficiency | >90% |
| No-Load Current Draw | 0.6A at 12.5V or higher |
| AC Outlets | 2 x standard 120V AC receptacles |
| Recommended Inline Fuse | 150A (sold separately) |
| Over-Temperature Protection | Alarm and shutdown at 55°C (±5°C) |
|---|---|
| Overload Protection | Yes |
| AC Output Short Circuit Protection | Yes |
| Fault Reset | Auto reset on most fault conditions |
| Cooling | Internal cooling fan |
| Power-On Indicator | Green LED |
| Overload Indicator | Red LED |
| Dimensions (L x W x H) | 10.5" x 5.25" x 3.25" (26.7 x 13.3 x 8.3 cm) |
|---|---|
| Unit Weight | 3.3 lbs (1.5 kg) |
| Boxed Weight | 4 lbs (1.8 kg) |
You can run most standard appliances and tools at or below 1,250 watts of continuous draw — examples include a box fan, LED lighting, a small refrigerator, an electric drill, a coffee maker, or a laptop charger. Devices with motors (pumps, compressors) have a higher startup surge; the inverter handles up to 2,400 watts of surge power to accommodate that brief spike. Always check the wattage label on the device before connecting.
Modified sine wave is a stepped approximation of the smooth AC wave produced by utility power. It works well for resistive loads (heaters, incandescent bulbs, most power tools) and many standard appliances (refrigerators, fans, pumps). However, some sensitive electronics — including certain televisions, audio equipment, medical devices, and variable-speed motor controls — may experience interference, reduced performance, or shortened component life. AIMS Power notes this inverter may cause visible lines or waves on some TVs. If you need clean power for sensitive electronics, consider AIMS Power's pure sine wave inverter line.
AIMS Power specifies a 150-amp inline fuse for this inverter, which is sold separately. Battery cables are also sold separately. For safe and efficient operation, use appropriately rated DC cables — undersized wiring can cause voltage drop and heat buildup. AIMS Power sells compatible inline fuse kits and UL-listed cables on their website.
Yes. This inverter accepts any 12V DC source within the 10–15V operating range, which covers standard automotive, marine, and deep-cycle batteries. It connects directly to a 12V battery bank — no modification to your vehicle's electrical system is required. For sustained loads, a dedicated deep-cycle or lithium battery bank is recommended rather than relying on a vehicle's starting battery.
The inverter includes three layers of protection: over-temperature shutdown (activates at 55°C ±5°C with an alarm before shutdown), overload protection (cuts AC output if the load exceeds the rated capacity), and AC output short-circuit protection. Most fault conditions reset automatically once the underlying issue is resolved — you do not need to manually reset the unit in most cases.
Yes. This inverter is a good fit for smaller 12V solar setups where a charge controller keeps a battery bank topped up and the inverter draws from that bank as needed. Size your battery bank and solar array to match your expected daily load; the inverter itself does not include solar charging capability and requires a separate charge controller and solar panels.
This inverter is covered by a 2-year parts and labor warranty and includes lifetime technical support from AIMS Power. Purchasing from TrueStead Supply as an authorized dealer ensures your warranty registration is valid.
No. AIMS Power sells two 1,250-watt 12V models. This is the base "no-frills" model, which omits digital display meters for AC wattage and DC voltage in exchange for a smaller size, lighter weight, and lower price. The "with Features" variant adds those meters and carries a higher price. If digital readouts are important to your installation, confirm the model before ordering.
