1250W PowerVerter RV Inverter/Charger with Hardwire Input/Output
1250W PowerVerter RV Inverter/Charger with
Hardwire Input/Output
12V DC or 120V AC input; 120V
AC output (hardwired)
1250 watts continuous and 2500
watts DoubleBoost inverter output
3 stage, 14/55 amp selectable
wet/dry cell battery charger
Built-in Isobar® premium AC
surge protection and Auto
Transfer Switching option for
battery backup / UPS operation
Tested to power inverter
standards UL458 (USA) and
CSA (Canada)
High reliability large-transformer
design with protected DC and AC
wiring terminals
Tripp Lite RV1250ULHW Inverter/Charger is the quiet alternative to gas generators with no fumes, fuel or noise to
deal with! It provides equipment with utility- or generator-supplied AC electricity filtered through premium ISOBAR
surge protection. This DC-to-AC inverter with automatic line-to-battery transfer and integrated charging system
Package Includes
RV1250ULHW Inverter/Charger
Instruction manual with warranty
serves as an extended run UPS, a standalone power source or an automotive inverter suitable for rugged RV
applications. Supplies up to 1250 watts of continuous 120V AC power from any 12V DC battery or automotive DC source. OverPower TM inverter output
feature temporarily provides up to 150% of the continuous output for 1-60 minutes, and DoubleBoost TM inverter output feature delivers up to 200% of the
continuous output for up to 10 seconds, providing the extra power needed to cold start heavy-duty tools and motorized equipment. When hardwire AC input is
energized, commercial power passes through to connected equipment and the battery set is recharged via 3 stage, selectable 14/55 amp charging system. In
UPS mode, the APS system responds to blackouts and voltage fluctuations with a near instantaneous automatic transfer to battery-derived AC output.
Includes a set of high current DC input terminals for simple installation (user supplies batteries and cabling - see owner's manual for recommendations).
Passes sine wave utility or generator power during battery charging and UPS line power operation, plus efficient PWM sine wave AC output in inverter and
UPS backup modes. Reliable large transformer design, with frequency control powers resistive electronic loads or large inductive motors, compressors and
other items with high current needs on startup. Optional APSRM4 wired remote power switch with full status LEDs provides remote power inverter on/off
switching and continuous status information ( APSRM4 sold separately). Supports an unlimited amount of runtime with any number of user-supplied batteries
connected. Highly adaptable to a variety of applications and site conditions with adjustable charger settings for wet/gel battery types and selectable line to
battery power transfer voltages.
NOTE: To protect against high current draw that may occur during inverter failure, a fuse link rated at 200a should be positioned no more than 18" from the
RV1250ULHW's battery in the positive line.
RV1250ULHW serves as an automotive or stationary DC-to-AC inverter with automatic line-to-battery transfer and integrated battery charger
Supports 120V AC output from a 120V AC line power source or 12V DC battery source
16.6 millisecond automatic transfer between line and battery power supports UPS protection during blackouts and voltage fluctuations for equipment
compatible with a one cycle transfer time
1250 watts continuous AC output in inverter mode, 2400 watts continuous AC
output in AC mode
1250 watts continuous AC output in inverter mode, 2400 watts continuous AC output in AC mode
Double Boost inverter output supports momentary startup loads up to 200% of the continuous rating for up to 10 seconds
OverPower inverter output supports longer duration overloads to 150% for 1-60 minutes under ideal battery and temperature conditions. (For best results,
utilize OverPower usage for as short of a duration as possible, ensure battery bank and cabling is able to provide full nominal DC voltage under load and
allow inverter/charger to fully cool before and after OverPower usage.)
3 stage, selectable 14/55 amp battery charger with adjustable settings for wet/gel battery types offers fast, reliable battery recharging
Protected hardwire bolt-down input lugs safely accept heavy gauge input wiring from attached battery bank
Protected hardwire output passes 120V line power or inverter output through to connected equipment
Reliability enhanced large-transformer design tested to UL (USA) and CSA (Canada) standards
Moisture-resistant construction enables vehicular or marine operation in high humidity environments
3 position operating mode switch supports "AUTO" mode to enable automatic transfer between DC and AC modes, CHARGE-ONLY to maintain a full
battery charge when AC is present without auto transfer and SYSTEM OFF settings
Set of six front panel LEDs display AC/DC operational modes, overload status, DC voltage level, shutdown status and system fault status
Set of 4 configuration dipswitches support wet/gel battery charging profiles, adjustable 135/145V high voltage auto transfer during overvoltages and
selectable 75/85/95/105V AC low voltage auto transfer during brownouts
Set of 4 additional configuration dipswitches support 4 levels of charger limiting relative to output load size, a battery equalization program and battery
charger low/high settings
Resettable 12A charger AC input breaker and resettable 20A AC output breaker and automatic 2 speed cooling fan protect the inverter from load and
temperature related failures
Grounding lug properly connects the inverter/charger system to earth ground or vehicle grounding system
Automatic overload and thermal shutoff safely turns off inverter as excessive loads or overheating conditions develop
Front panel remote control connector enables remote off/on switching (requires APSRM4 switch accessory). Optional APSRM4 accessory also includes
user configurable jacks to support inverter shutoff or startup as a vehicle ignition is engaged
Front panel remote control connector enables remote off/on switching (requires APSRM4 switch accessory). Optional APSRM4 accessory also includes
user configurable jacks to support inverter shutoff or startup as a vehicle ignition is engaged
Load sensing control dial enables adjustable load threshold required to automatically turn the inverter on and off in DC mode as load conditions change
Includes battery temperature sensor with 20 foot cable to prolong battery life by adjusting the charge level based on battery temperature
Automatic Generator Starter jack enables user configuration of automatic generator startup as inverter batteries drop to 11.5VDC and generator shutoff
as inverter batteries are recharged to 14.1VDC
Nominal Output Voltage(s)
Frequency Compatibility
60 Hz
Output Receptacles
Output (Watts)
Continuous Output Capacity (Watts)
Peak Output Capacity (Watts)
Output Voltage Regulation
LINE POWER (AC): Maintains 120V nominal sine wave output from line power source. INVERTER POWER (AC):
Maintains PWM sine wave output voltage of 120 V AC (+/-5%).
Output Frequency Regulation
60 Hz (+/- 0.3 Hz)
Overload Protection
Includes 12A input breaker dedicated to the charging system and 20A output breaker for AC output loads
Nominal Input Voltage(s) Supported
120V AC
Recommended Electrical Service
DC INPUT: Requires 12V DC input source capable of delivering 95A for the required duration (when used at full
continuous capacity - DC requirements increase during Over-Power and Double-Boost operation). For automotive
applications, professional hardwire
Maximum Input Amps / Watts
DC INPUT: Full continuous load - 95A at 12V DC. AC INPUT: 20 amps at 120V AC with full inverter and charger load
(12A max charger-only / combined input load to support charger and AC output is automatically controllable to
66%-33%-0% based on AC output lo
Input Connection Type
DC INPUT: Set of 2 DC bolt-down terminals. AC INPUT: hardwire
Input Cord Length Details
DC INPUT: User supplies cabling. 4 gauge or larger (see manual). AC INPUT: hardwire
Voltage Compatibility (VAC)
Voltage Compatibility (VDC)
Expandable Battery Runtime
Runtime is expandable with any number of user supplied wet or gel type batteries
DC System Voltage (VDC)
Battery Pack Accessory (Optional)
98-121 sealed lead acid battery(optional)
Battery Charge
14A / 55A (selectable)
LVC (Low Voltage Cut-Off)
10V DC +/-3%
Expandable Runtime
Front Panel LEDs
Set of 6 LEDs offer continuous status information on load percentage (6 levels reported) and battery charge level (7
levels reported). See manual for sequences.
3-position on/off/remote switch enables simple on/off power control plus auto/remote setting that enables distant
on/off control of the inverter system when used in conjunction with APSRM4 accessory(sold separately) in inverter
AC Suppression Joule Rating
Shipping Dimensions (hwd / in.)
12.5 x 11 x 10.75
Shipping Dimensions (hwd / cm)
31.75 x 27.94 x 27.31
Shipping Weight (lbs.)
Shipping Weight (kg)
Unit Dimensions (hwd / in.)
7 x 8.75 x 9
Unit Dimensions (hwd / cm)
17.78 x 22.23 x 22.86
Unit Weight (lbs.)
Unit Weight (kg)
Cooling Method
Multi-speed fan
Material of Construction
Form Factors Supported
Mounting slots enable permanent placement of inverter on any horizontal surface (see manual for additional
mounting information)
Relative Humidity
0-95% non-condensing
Transfer Time (Line Power to
Battery Mode)
16.6 milliseconds (typical - compatible with many computers - verify transfer time compatibility of loads for UPS
Low Voltage Transfer to Battery
In AC "auto" mode, inverter/charger switches to battery mode as line voltage drops to 75V (user adjustable to 85, 95,
105V - see manual)
High Voltage Transfer to Battery
In AC "auto" mode, inverter/charger switches to battery mode as line voltage increases to 135V (user adjustable to
145 - see manual)
Load Sensing
Optional load sense function enables automatic inverter shutoff and startup as connected equipment is powered off
and on. Front panel load sense potentiometer can be set to shutoff or turn on inverter power in response to loads of
any level.
Tested to UL458 (USA) and CSA (Canada)
Product Warranty Period (U.S. &
30-month limited warranty
Product Warranty Period
1-year limited warranty
Product Warranty Period (Mexico)
30-month limited warranty
Product Warranty Period (Puerto
30-month limited warranty
Remote Control Capability
© 2017 Tripp Lite. All rights reserved. All product and company names are trademarks or registered trademarks of their respective holders. Use of them does
not imply any affiliation with or endorsement by them. Tripp Lite has a policy of continuous improvement. Specifications are subject to change without notice.
Tripp Lite uses primary and third-party agencies to test its products for compliance with standards. See a list of Tripp Lite's testing agencies:
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