InSight 12V LT

GC2 12V 120Ah
Cold Weather LiFePO4 Battery

InSight 12V LT

GC2 12V 120Ah
Cold Weather LiFePO4 Battery

Estimated 1 - 2 weeks shipping.

Offering higher peak discharge and outputting 160A continuous, the InSight 12V LT lithium battery was built specifically to meet the power and energy requirements in RV and Marine deep-cycle applications. Delivering unmatched performance with its higher continuous capabilities, you can run multiple appliances at the same time with just one battery.

SAVE $144.99


MSRP: $1,449.95

United States Of America White 230216 103954


Warranty White 230216 103954


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Cold Weather Ready

Featuring our Low Temperature Series (LT) technology, the InSight 12V battery can safely charge at temperatures down to -20°C (-4°F).

Easy Installation

The GC2-sized InSight 12V batteries are drop-in ready and easy to install, no need to modify trays, no complicated connections, and no heavy lifting.


InSight batteries are connected in parallel which means you have the freedom and flexibility to use the right amount of batteries for your setup.

Super Smart BMS

InSight batteries also feature an intelligent BMS that provides precision balancing within a battery and between batteries in a parallel system without the need for charging batteries individually.



Functional Specifications

Nominal Voltage 12.8V
Cell Chemistry LiFePO4
Cell Type Prismatic
Ampere-hour Capacity 120Ah
Watthour Capacity 1.536kWh
Specific Energy 128Wh/kg
Charge Efficiency 99%
Impedance (50% SOC, 1kHz) <100mΩ
Cycles @ 80% DOD >3500
Parallel Capable Yes (unlimited)
Series Capable No (max 12V system)

Mechanical Specifications

BCI Size GC2 / GC8
Dimensions (LxWxH) 10.2 x 7.1 x 10.9 in (260 x 180 x 276mm)
Weight 34.4 lbs (15.6 kg)
Case Material ABS
Stud Terminal M8 X 1.25 - 20
Insert Terminal M8 X 1.25 - 20
Torque 79.7-88.5 in-lbs. 6.6 - 7.4 ft-lbs. 9-10 N-m
Handles Molded
Ingress Protection Marking IP67
Case Flame Rating UL94 V-0

Discharge Specifications

Continuous Discharge Current 160A
Peak Discharge Current - 1 175A - 5 min
Peak Discharge Current - 2 250A - 2 min
Peak Discharge Current - 3 350A - 15 sec
Peak Discharge Current - 4 400A - 5 sec
Short Circuit Protection 3000A - 300 μsec
Protection Recover Automatic
Low Voltage Disconnect 10V - 5 sec (2.5vpc)
Low Voltage Reconnect Automatic
Self-Discharge perMonth @ 25°C in OFF mode 2.80%

Charge Specifications

Recommended Charging Current 10-60A
Disconnect Charge Current - 1 100A - 5 sec
Disconnect Charge Current - 2 120A - 0.5 sec
Recommended Charge Voltage 14.4-14.6V
Float Voltage 13.8V
High Voltage Disconnect 14.8V -4 sec (3.7vpc)
High Voltage Reconnect Automatic
Temperature Compensation None
Heating Element Power 50W
Heating Rate 5⁰C/hr

Environmental Specifications

Charge Temperature 32°F to 113°F (0°C to 45°C)
Discharge Temperature -4°F to 149°F (-20°C to 65°C)
Operating Humidity <90% RH
Storage Temperature 50°F to 95°F (10°C to 35°C)
Storage Humidity 25 to 85% RH


UL1973 (Battery Pack) File Number: MH66011
CE (Battery Pack)
IEC 62133 (Battery Pack) PENDING
UN38.3 (Battery Pack)

Shipping Classification

UN 3480, Class 9

Performance Characteristics

Charge Voltage Char Chart 12 V graph
Charge Voltage Soc Chart 12 V graph
Discharge Voltage At Various Rates 12 V graph
Discharge Voltage Chart 12 V graph
Cycle Life Vs Depth Discharge Chart graph
Life Vs Lead Acid Chart graph


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Frequently Asked Questions

Can InSight batteries be connected in parallel or series?
RELiON’s InSight batteries were designed exclusively to run in parallel. For starters, each InSight 12V battery is 12 volts. Up to 10 Insight batteries can be connected in parallel, giving you up to 1200 amp-hours. Because they are in parallel, if any one battery goes offline, you will not notice any difference in performance, only duration. A parallel connection extends the reliability of each individual Insight battery to the entire array, giving you more power, more capacity, and less to worry about.
How does the heating element work?
The battery management system monitors the internal temperature of the battery. If the temperature drops below 32°F (0°C) and a charge cycle is initiated, the BMS will divert charge current to the heating element until the uniform internal temperature of the battery is safe for charging. The specific safe charging temperature differs. For small batteries it's 50°F (10°C), for larger batteries it's 41°F (5°C). See individual data sheets for details.
How long does the heating element take to warm the battery to a safe temperature?
Depending on how cold it is and which model of battery, the BMS will divert 5-15 amps of charge current to the heating element. The heating rate for the InSight 12V battery is 5⁰C per hour.
Does the heating element keep the battery warm during discharging also?
No, during discharge the heating element remains off. The battery will function according to the discharge voltage characteristics at various temperatures chart. It is perfectly safe to discharge in temps down to -4°F (-20°C).
How many amps does the heating element draw?
Depending on battery model, the BMS diverts 5-15 amps to power the heating element.
How can I determine the state of charge (SOC) of my InSight battery?
We recommend using a shunt-based fuel gauge to measure SOC with the InSight Battery. This type of fuel gauge accurately measures the discharge/recharge currents and calculates the Ampere-hours (Ah) flowing in and out of the battery. The LEDs on the battery will also indicate the SOC: 95% - 100% Solid Green Solid Green 75% - 95% Solid Green Flashing Green (every ½ sec.) 50% - 75% Solid Green Solid Yellow 30% - 50% Solid Green Flashing Yellow (every ½ sec.) 10% - 30% Solid Green Solid Red 0 - 10% Solid Green Flashing Red (every ½ sec.)
How do I charge InSight batteries?
It is best to use/select a Lithium, AGM or GEL charge profile in that order of availability. Consult your manual or charger manufacturer for directions on this capability. Spot check the battery SOC LED indicators with a quick press and release of the battery Power Button. Chargers typically display a solid Green Light when the charge is completed, and a flashing green light when the battery is near the end of charge (will vary by charger). Both conditions may or may not occur depending on your charger design. Neither condition is necessarily required to properly achieve a full recharge.
Is there a way to turn the batteries on and off without accessing the battery compartment?
The InSight Series Remote Button gives you the convenience to power on and off your InSight Series batteries without having to access the battery compartment. This high-quality plug-and-play accessory saves you time and energy.

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