Special FeaturesThe 18-volt LXT battery BL1850B from Makita features a convenient slide system and an LED indicator. Specifically designed for true professionals. A comparison with 4.0 Ah batteries clearly shows that 5.0 Ah batteries offer many advantages over 4.0 Ah batteries, as both batteries are the same size and weight. However, with the 5.0 Ah battery, you can work continuously for much longer. This saves a lot of time, as you don't have to switch batteries. Technical DataLi-ion/ Ni-MH/ Ni-Cd/ Lead: Li-ion Battery voltage: 18 V Amperage: 5.0 Ah Model: BL1850 Charged with charger DC18RC in: 48 minutes Included as Standard1 piece Battery StatusThe integrated LED indicator on the battery keeps you constantly informed about the remaining capacity. This way, you can easily estimate how long you can continue working before a recharge is needed:4 LEDs: The battery is still 75-100% full. 3 LEDs: The capacity is between 50-75%. 2 LEDs: There is still 25-50% energy remaining. 1 LED: The battery only has 0-25% energy left. And when it's time to recharge, the first LED will flash as a signal. Should a malfunction occur, the LEDs will flash in a two-by-two pattern, so you know immediately that something is wrong. Which machines are compatible with the 5.0 Ah battery?Not every machine is suitable for 5.0 Ah batteries. You can recognize compatibility by the machine's designation. If it starts with the letter D, then the machine is suitable for 5.0 Ah batteries. Documents User manual