Shido DC4.0 Dual Function Battery Charger for Lithium & Lead Acid for Motorcycle and Car Batteries 6 volts to 12 volts
These chargers are clever. Very clever, and with the use of pre-installed algorithms dictate the optimum Voltage (V) and Current (A) for the battery that has been connected.
That in-built intelligence is not only for when the battery is first connected. The Charger will also re-calculate throughout the time the battery is connected to apply any further optimisation. Calculating the optimum charging voltage and current for the connected battery throughout the charge cycle,The Shido Dual Charger check the batteries voltage every 4 hours once fully charged. If the voltage drops below 12.8V the charger will begin the charge cycle again.
A flat lithium LiFePO4 battery (<10V) should be charged very gently from the start by applying a very low voltage and current and then incrementally increasing these. Applying high voltage and current directly from the start will cause premature failure and chargers that apply more than 15V will cause severe damage to your Lithium battery.
Suitable for Lithium Ion (LiFePO4) batteries and all types of Lead Acid batteries with a clear separation between Lithium and Lead-Acid charging modes.
Built in polarity reversal and short circuit protection.  
Supplied with "fit & forget" ring leads with waterproof cap as well as crocodile clips.
IP65 Waterproof.