Download LiteratureMastervolt 45513000 Battery AccessoriesAlpha Pro IIIAdvanced 3-step charge regulator for standard and high performance alternatorsThe propulsion engine of your boat or vehicles may be used to quickly charge your service batteries, either while cruising or taking a break. The advanced and powerful Alpha Pro III ensures fast and safe charging, protecting both the engine and the batteries. Building on 10 years of experience, the Alpha Pro III features a modernized look, higher power and improved ease of use.The Alpha Pro III measures the temperature and the voltage of your batteries to prevent overcharging, keeping them in perfect condition. It also monitors the engine load, thus reducing sound variations, wear and tear. The smart ‘keep alive’ feature solves a common problem causing unreliable tachometer readings. Via MasterBus, it communicates RPM, alternator status and charge status to create intelligent power systems. Pull the max out of your alternatorThe alternator that comes with the engine is not optimally suited for charging service batteries. Designed for low cost and short charge cycles, it charges at a slow pace and is easily overheated. Replacing the standard regulator* with the Alpha Pro III optimizes this charging process, protects against overheating and overcharging and extends the lifetime of your batteries. (* not allowed on Euro 5/6 engines)Super charge your systemFor superfast charging at low RPM, Mastervolt recommends to combine the Alpha Pro III with a high performance alternator such as the reputable Alpha series. With 20 amps of field current capability, the Alpha Pro is the only 3-step regulator in the market capable of controlling alternators with outputs up to 400 A!Alpha Pro III: Fast charging, anytime, anywhere. Features: Transforms every alternator into a full temperature controlled 3-step charger. Reduces run time, saves fuel, reduces noise and emissions. Protects from overcharging and extends battery life. Balances engine load, reducing RPM variations. Compatible with standard and high performance alternators, incl. 200 A 400 A models. Integrated ‘keep alive’ feature for reliable tachometer readings. Suitable for every battery type, including Lithium Ion. Suitable for 12 V and 24 V system voltages. Masterbus compatible: simplifies wiring, saves space and weight, and creates optimal cooperation between Mastervolt products. Applications:Applications range from improving the performance of a standard alternator in a vehicle or boat, to generator replacement, when combined with a high performance alternator. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Normalized SKU: 45513000UPC Code: 816882020377Mastervolt 45513000 Literature Download Owners Manual

Mastervolt 41500400 AlternatorsAlternator Temperature SensorWhen using the Alpha Pro in combination with non-Mastervolt alternators, this alternator temperature sensor may offer additional protection against over heating. Normalized SKU: 41500400UPC Code: 816882021282

Mastervolt 83012021 Battery IsolatorsMastervolt BI 1202-S Battery IsolatorModel: 83012021 Battery isolators that divide your charge current with a minimum energy loss. The Charge Mate for connecting and/or disconnecting two batteries. Battery Watch for monitoring the condition of your batteries (also usable as main switch). Onboard systems usually consist of two or more batteries that function independently when powering the 12 or 24 V consumers. These batteries require independent charging with reliable battery isolators or battery combiners.Mastervolt’s BI battery isolators are based on conventional diode technology. The diode voltage drop (ca. 0.6 V) can be compensated for by adapting the output voltage of the connected charger or alternator. Mastervolt Mass battery chargers and Alpha Pro charge regulators are standardly equipped with automatic voltage drop compensation.The Mastervolt BI battery isolators are compact and fully solid state, preventing wear. The weight varies from 580 to 1300 grams.Completely corrosion-proof material with aluminium heat sinks. The electronic components are encased in synthetic materials, the BI models have molded diode splitters.The synthetic end plates feature connection lugs, the solid bolt connections with nuts and locking rings ensure easy installation.Specifications General specifications Number of battery outlets 2 Dimensions, hxwxd 8.1 x 5.5 x 3.1 inch Weight 2.6 Technical specifications Max. output battery charger 80 A Max. output alternator 120 A Compensation diode Yes Normalized SKU: 83012021UPC Code: 852968002585

Mastervolt 83012031 Battery IsolatorsBI 1203-S IsolatorOnboard systems usually consist of two or more batteries that function independently when powering the 12 or 24V consumers. These batteries require independent charging with reliable battery isolators or battery combiners.Mastervolt offers several intelligent solutions: Battery isolators that divide your charge current with a minimum energy loss. The Charge Mate for connecting and/or disconnecting two batteries. Battery Watch for monitoring the condition of your batteries (also usable as the main switch). Battery isolators for conventional systems with an alternator or battery charger and two or three batteriesMastervolt’s BI battery isolators are based on conventional diode technology. The diode voltage drop (ca. 0.6 V) can be compensated for by adapting the output voltage of the connected charger or alternator. Mastervolt Mass battery chargers and Alpha Pro charge regulators are standardly equipped with automatic voltage drop compensation.Compact and lightweightThe Mastervolt BI battery isolators are compact and fully solid-state, preventing wear. The weight varies from 580 to 1300 grams.Robust and durableCompletely corrosion-proof material with aluminum heat sinks. The electronic components are encased in synthetic materials, the BI models have molded diode splitters.Fast installationThe synthetic end plates feature connection lugs, the solid bolt connections with nuts and locking rings ensure easy installation. Normalized SKU: 83012031

Download LiteratureMastervolt 83116035 Battery AccessoriesBattery Mate 1603 IG Isolator - 120 Amp, 3 BankThe Battery Mate is the ultimate solution for charging several batteries simultaneously and is compatible with any type of alternator/battery charger, in both existing and new systems. As the voltage loss between the alternator and battery is negligible, the Battery Mate performs far better than conventional battery isolators. This ensures fast and complete charging of your batteries without having to make additional adjustments to the alternator.While battery isolators are conventional diode splitters, the Battery Mate's technology is electronic and includes mosfets (transistors). Its components compensate for variations in voltage and ensure that charging continues at the right voltage level, even with several battery banks. The input side on the Battery Mate is connected to the alternator and/or battery charger, while two batteries are connected to the output side. The Battery Mate is easy to install on a DIN rail (industry standard).The Mastervolt Battery Mate can be used in any application even if the standard alternator need external excitation or voltage sensing. In this case the additional IG contact can be connected.WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Normalized SKU: 83116035UPC Code: 816882021046Mastervolt 83116035 Literature Download Quick Reference Guide Owners Manual

  Download LiteratureMastervolt 83116025 Battery AccessoriesBattery Mate 1602 IG Isolator - 120 Amp, 2 BankThe Battery Mate is the ultimate solution for charging several batteries simultaneously and is compatible with any type of alternator/battery charger, in both existing and new systems. As the voltage loss between the alternator and battery is negligible, the Battery Mate performs far better than conventional battery isolators. This ensures fast and complete charging of your batteries without having to make additional adjustments to the alternator.While battery isolators are conventional diode splitters, the Battery Mate's technology is electronic and includes mosfets (transistors). Its components compensate for variations in voltage and ensure that charging continues at the right voltage level, even with several battery banks. The input side on the Battery Mate is connected to the alternator and/or battery charger, while two batteries are connected to the output side. The Battery Mate is easy to install on a DIN rail (industry standard).The Mastervolt Battery Mate can be used in any application even if the standard alternator need external excitation or voltage sensing. In this case the additional IG contact can be connected.WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Normalized SKU: 83116025UPC Code: 83116025Mastervolt 83116025 Literature Download  Quick Reference Guide  Owners Manual

  Download LiteratureMastervolt 83125035 Battery AccessoriesBattery Mate 2503 IG Isolator - 200 Amp, 3 BankThe Battery Mate is the ultimate solution for charging several batteries simultaneously and is compatible with any type of alternator/battery charger, in both existing and new systems. As the voltage loss between the alternator and battery is negligible, the Battery Mate performs far better than conventional battery isolators. This ensures fast and complete charging of your batteries without having to make additional adjustments to the alternator.While battery isolators are conventional diode splitters, the Battery Mate's technology is electronic and includes mosfets (transistors). Its components compensate for variations in voltage and ensure that charging continues at the right voltage level, even with several battery banks. The input side on the Battery Mate is connected to the alternator and/or battery charger, while two batteries are connected to the output side. The Battery Mate is easy to install on a DIN rail (industry standard).The Mastervolt Battery Mate can be used in any application even if the standard alternator need external excitation or voltage sensing. In this case the additional IG contact can be connected.WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Normalized SKU: 83125035Mastervolt 83125035 Literature Download  Quick Reference Guide  Owners Manual

  Download LiteratureMastervolt 83304002 Battery AccessoriesCharge Mate Pro 40 - Electronics Charge RelayCurrent limited electronic charge relay with high efficiency and reverse current protectionA secondary battery on board requires a dedicated charging solution. The Charge Mate Pro makes it possible to distribute the charger or alternator current effectively between two battery banks such as a starter and a service battery. The Charge Mate Pro connects both batteries during charging and keeps them isolated when discharging. This significantly reduces the risk of a flat starter battery for example.The Charge Mate Pro offers an additional advantage over mechanical charge relays, by limiting the charge current to the second battery. The primary battery, like a starter battery, is therefore charged with priority. The return current is automatically blocked even when the secondary battery has a higher voltage. An emergency start function is possible by connecting an optional bypass switch to the Charge Master Pro.A marine application example is the connection of a bow thruster battery to a service battery. The Charge Mate Pro ensures that the service battery is always charged with priority. The blocking of the return current from the bow thruster battery guarantees that the bow battery remains charged while the current limiting also prevents power dips of the onboard electrical network.The Charge Mate Pro series consist of a 40 Amp and a 90 Amp version, both suitable for charger or alternator applications.Charge Mate Pro: for controlled charging from a single source.ApplicationsLeisure and professional marine and mobile applications. An effective solution for high power demand on board and/or the need of prioritised or current limited charging.Features Electronic charge coupling with very low voltage drop Makes effective dual charging possible Suitable for all battery types, including Lithium Ion Charge current secondary battery limited to 40 A High system reliability by prioritised charging of the main battery Unidirectional which blocks return current under all circumstances Prevents power dips of the onboard electrical network Suitable for all kinds of chargers and alternators Monitoring with LED status indication IP65 electronics in a corrosion resistant casing with aluminum heat sinks Fast and easy installation General specifications Remote switch functions:  on, off, auto, start assist Monitoring: LED (warnings and status indication) Output current: limited to 40 A Number of battery outlets: 2 Input voltage range: 9-32 V Parallel configuration: yes Battery voltage: automatic 12/24 V detection Dimensions, hxwxd: 157 x 140 x 80 mm / 6.2" x 5.5" x 3.1" Weight: 0.88 kg / 1.9 lb Approvals: CE Technical specifications Connection possibilities: 3 x fast-on connectors (switch, ground and status) o switch: for an optional single pole ON-OFF-ON switch for remote operation o status: for an optional LED indicator Power consumption: switch open: < 1 mA at 12/24 V DC Battery types: all types (Lithium Ion protection via Multi purpose contact, product code 77030500) Switch on voltage: 13.5 V (12 V) / 27 V (24 V) Switch on delay: 5 sec. Switch off voltage: 12.75 V (12 V) / 25.5 V (24 V) Switch off delay: 2.5 sec. Relay: electronically (mosfets with low voltage drop of max 0.2 V) Temperature range (ambient temp.): -40 °C to 60 °C -40 to 140 °F Protection degree: IP65 WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications:AFD = NONE Amps - Max = NONE Lockable = NONE Positions = NONENormalized SKU: 83304002UPC Code: 83304002Mastervolt 83304002 Literature Download  Owners Manual

Mastervolt 83309002 Battery ChargersCharge Mate Pro 90Current limited electronic charge relay with high efficiency and reverse current protectionA secondary battery onboard requires a dedicated charging solution. The Charge Mate Pro makes it possible to distribute the charger or alternator current effectively between two battery banks such as a starter and a service battery. The Charge Mate Pro connects both batteries during charging and keeps them isolated when discharging. This significantly reduces the risk of a flat starter battery for example.The Charge Mate Pro offers an additional advantage over mechanical charge relays, by limiting the charge current to the second battery. The primary battery, like a starter battery, is therefore charged with priority. The return current is automatically blocked even when the secondary battery has a higher voltage. An emergency start function is possible by connecting an optional bypass switch to the ChargeMaster Pro.A marine application example is the connection of a bow thruster battery to a service battery. The Charge Mate Pro ensures that the service battery is always charged with priority. The blocking of the return current from the bow thruster battery guarantees that the bow battery remains charged while the current limiting also prevents power dips of the onboard electrical network.The Charge Mate Pro series consists of a 40 Amp and a 90 Amp version, both suitable for charger or alternator applications. The Charge Mate Pro 90 ensures a higher charge current for example when charging Lithium-Ion batteries. It is also perfectly suitable for large automotive alternators up to 180 A and can be used in parallel operation with a 225 Amp alternator to fulfill even higher continuous power demands of your equipment on board.Charge Mate Pro: for controlled charging from a single source.Applications:Leisure and professional marine and mobile applications. An effective solution for high power demand onboard and/or the need for prioritized or current limited charging.Features: Charges two battery banks from a single source. Electronic charge coupling with very low voltage drop. Makes effective dual charging possible. Suitable for all battery types, including Lithium-Ion. Charge current secondary battery limited to 40 or 90 A. High system reliability by prioritizing charging of the main battery. Unidirectional which blocks return current under all circumstances. Prevents power dips in the onboard electrical network. Suitable for all kinds of chargers and alternators. Monitoring with LED status indication. IP65 electronics in a corrosion-resistant casing with aluminum heat sinks. Fast and easy installation. General Specifications: Monitoring: LED (warnings and status indication) Output current: limited to 90 A; > 25 °C derating power Number of battery outlets: 2 Input voltage range: 9-32 V Parallel configuration: Yes Battery voltage: Automatic 12/24 V detection Remote switch functions: On, off, auto, start to assist Dimensions, hxwxd: 157 x 140 x 80 mm/6.2 x 5.5 x 3.1 inch Weight: 0.88 kg/1.9 lb Compliance: CE Technical Specifications: Connection possibilities: 3 x faston connectors (switch, ground, and status) • switch: for an optional single-pole ON-OFF-ON switch for remote operation • status: for an optional LED indicator Power consumption: Switch open: < 1 mA at 12/24 V DC Battery types: All types (Lithium-Ion protection via Multipurpose Contact Output, product code 77030500) Switch on voltage: 13.5 V (12 V) / 27 V (24 V) Switch on delay: 5 sec Switch off voltage: 12.75 V (12 V) / 25.5 V (24 V) Switch off delay: 2.5 sec Relay: Electronically (MOSFETs with a low voltage drop of max 0.2 V) Temperature range (ambient temp.): -40 °C to 60 °C/-40 °F to 140 °F Protection degree: IP65 WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Normalized SKU: 83309002UPC Code: 816882021350