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Lento offers next-generation smart MPPT based solar chargers for maximum efficiency and the highest performance required in demanding situations. MPPT stands for maximum power point tracking and Lento’s smart MPPT solar chargers play a crucial, central role in stand-alone and hybrid solar power installation. MPPT increases energy transfer efficiency by as much as 30% by calculating the maximum voltage available from the SPV modules at which maximum power is available for charging and sets the charging current accordingly. Output from SPV modules can vary considerably according to changing weather conditions and incorporation of MPPT means the charging conditions are always optimized by covering extra voltage to amperes and thus speeding up the charging process. Lento uses high-grade components to assure the best performance and extended life of the unit.

Available Variants:

1450 VA / 24 VDC
2100 VA / 24 VDC
3.5 KVA / 48 VDC
5 KVA / 48 VDC & 96 VDC
7.5KVA / 120 VDC
10 KVA / 192 VDC
Product Description
Salient Features
Technical Documentation
Lento’s smart MPPT Solar chargers also play a dual role. The MPPT microprocessor and DSP-based module constantly measures the load current on the battery and prevents deep discharge thereby extending battery life. In highly demanding SPV installations and where performance and efficiency are more critical, the best solution is a maximum power point tracking (MPPT) based solar charger. Unlike the simple PWM MOSFET charge controller, MPPT solar chargers employ sophisticated microprocessor-based circuitry with a wide number of variable presentable parameters and also automatic configuration. The end result is a gain in efficiency by 30%, better battery performance, and also enhanced battery life.

Lento Smart MPPT solar chargers are made of military-grade components and undergo severe tests to withstand any climatic conditions. Lento smart MPPT solar chargers are designed for unattended operation for remote solar power installations and there are options available to configure the charge voltage and current according to the type of battery in use. The intelligent microprocessor-based technology in MPPT solar chargers not only check for the type of battery but also constantly monitor its condition and adjust the charge accordingly. SPV modules are supposed to deliver 17 volts maximum but this is under optimum conditions and provided the glass surfaces are kept clean, which is not taken care of in remote conditions with the result that output voltage and the current falls drastically. Lento MPPS solar chargers automatically factor in the reduced input and adjust output to ensure that the charging of the battery and its state does not become affected.

In addition to these basic features, Lento MPPT solar chargers incorporate automation and protection features that assure users of increased power, better battery life, consistently reliable performance, and assured life.

For those looking for extra backup capacity for home or office deployment, the Kartel 5va/24v battery provides a robust option for comfortable home or office use. Though not the right capacity for your air conditioners, the 5kva is sufficiently robust for home or office power backup. Up to your refrigerator and freezer can be run on the 5kva. The inverter runs on a battery bank of two (2) 200ah batteries. For adequate power backup capacity, up to 200ah batteries are recommended. Typical appliances for the 5kva/24v inverter are tube lights, fans, TVs, DVDs/LCDs, refrigerator, freezer, computers, printers, scanners, copiers, etc. For estimated load, please see the sample load, below. Load estimation: bulb (6), fan (3), tv (2), home theatre (2), laptop (1), refrigerator (1)

Solar inverter, or converter, or PV inverter converts the variable DC output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be off-grid electrical network. It is a critical balance of system–component in a solar power system, allowing the use of ordinary AC-powered equipment.