NEW YORK, NY — February 6, 2026 — Leads & Copy — LiTime has launched its 12V 320Ah Mini Smart Self-Heating Battery, designed for cold-climate performance for RV owners, boaters, off-grid cabin users, and outdoor power setups. The new model integrates 4,096Wh of energy in a small enclosure and uses a smart self-heating system to enable automatic preheating, safe charging, and stable high-capacity output in winter conditions.
Low temperatures can increase internal resistance and reduce usable capacity in lithium batteries, while charging in subzero conditions can damage cells and accelerate degradation. Users often wait for batteries to warm before charging, even with shore power available.
The 12V 320Ah Mini battery measures 14.49 × 7.44 × 10.04 inches and delivers 4,096Wh of energy. Its volume is reduced by about 35% compared with typical 12V 300Ah LiFePO4 batteries. Weighing 57.3 pounds, it is also a lightweight alternative to lead-acid banks, being up to 70% lighter than three 12V 100Ah lead-acid batteries.
The smaller footprint allows for more installation options in tight RV compartments and supports flexible layouts in marine and off-grid systems. For larger power needs, the battery supports 4P4S expansion, enabling configurations up to 51.2V 1280Ah (65.5kWh) for extended runtime in homes and off-grid cabins, including during winter storms or grid outages.
The battery includes a 200A smart BMS, delivering 2,560W continuous power and up to 1,000A peak discharge for one second. The design can reliably support high-demand loads, such as space heaters and induction cooktops, even in cold environments.
The battery includes low-temperature safeguards that stop charging below 0°C (32°F) and stop discharging below -20°C (-4°F), resuming charging at or above 5°C (41°F). The system operates automatically without manual intervention.
LiTime offers two heating modes to speed up readiness while keeping charging within safe temperature ranges.
When a charger is connected in Regular Mode, the system checks battery temperature. If it’s below a preset threshold (such as 5°C), the battery will first use incoming charger current to warm the cells. Once temperatures reach a safe range, charging begins.
For travelers and outdoor users, Energy-Efficient Mode adds an app-triggered preheating option. If ambient temperature is above -20°C and the battery has more than 20% state of charge, users can remotely command the battery to warm itself using its own stored energy. If the battery still isn’t warm enough upon arrival, the system automatically switches to charger-powered heating.
LiTime says its self-heating technology is protected by patents and aims to improve charging efficiency in winter scenarios with a dual-mode strategy.
During discharge, the battery’s self-heating and thermal management are designed to maintain stable operating temperatures and consistent output in subzero environments.
The 12V 320Ah Mini battery includes built-in Bluetooth 5.0, enabling monitoring through the LiTime app. Users can view real-time battery status, remotely control self-heating switch and use LiTime’s patented Bluetooth encryption with password protection.
LiTime says the 12V 320Ah Mini Smart Self-Heating Battery was developed around real-world feedback from users in cold climates and positions the battery as the best battery for winter for RV, camping, off-grid, and marine applications.
LiTime delivers LiFePO₄ power systems for RV, marine, solar, and off-grid use.
Source: LiTime
