The La Marche ESCR battery charger is designed for maintaining and recharging batteries for engine generator sets. 
The A46/A46F Engine Start Battery Charger is specifically designed for maintaining and recharging starting batteries of engine generator sets. 
The A40/A40F Engine Starting Battery Charger provides precise and constant output voltage to charge your batteries. A40F is a filtered charger.
The family of A18J & A20R battery chargers is designed for continuous operation on unloaded Engine Starting Batteries.
The Magnetic Amplifier design battery charger/eliminator has an extremely high MTBF. Battery Power Systems
The EC charger uses proven Ferroresonant technology and is housed in an environmentally rugged Stainless Steel Case.
The La Marche Ultra Series Charger is a High Frequency Switch Mode charger specifically developed for Batteries and Ultra Capacitors used in starting applications. This programmable charger with filtered output is designed to charge various types of chemistries, such as Lead Acid, Nickel Cadmium and Ultra Capacitors.
Ultracapacitors are energy storage devices that provide burst power for applications requiring high power functions. Unlike batteries, which store energy via chemical reaction, ultracapacitors store energy by electrostatically (physically) separating positive and negative charges.
The La Marche single cell battery charger is used to maintain factory charge on batteries that have been in storage for long periods of tim in order to avoid premature battery failure.