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Lithium batteries are nearly 50% lighter than traditional lead acid batteries and provide around 60% more usable power. The Enerdrive B-TEC 300Ah Lithium G2 battery (equivalent to 480Ah AGM) is capable of much higher rates of discharge (required for inverters) and charge (quick recharge time), making it the ideal choice for caravan, RV and 4x4 installations. Not only are lithium batteries smaller, lighter and more powerful, but they last longer. In short, while they may cost more upfront, the long-term savings are tremendous.
The Enerdrive B-TEC lithium batteries have an inbuilt Battery Management System (BMS) with Bluetooth connection — thus the B-TEC name. This means each battery will monitor and optimise each prismatic cell during normal operation. It also protects the battery from overcharge, overdischarge, overtemperature and short circuit to ensure longevity and safe performance. The battery's key performance indicators are monitored and transmitted wirelessly to your smartphone or tablet. This information is presented in a clean, concise format making it quick and easy to review your system's performance. The BMS will monitor the following metrics:
A new feature to the G2 series is the "built-in reset button". This enables simple restarting of your battery in the event of an overdischarge / flat battery. Previously, if your battery voltage dropped below a safe level the BMS would isolate the battery to try and prevent irreversible damage to the cells. Once in this state the normal charging process could not be accepted until a "jumpstart voltage" was applied directly to the battery terminals to wake it up. Now it is a simple press of a button and you can begin charging as normal.
It is important to understand your battery's capabilities when looking for the appropriate accessories. Enerdrive have made the following recommendations for their ePOWER 300Ah Gen 2 lithium batteries: