EPEVER Solar Inverters

EPEVER is the brand of Beijing Epsolar Technology Co., Ltd., a Beijing company that has made solar power electronics since 2007. Its first and best-known products are MPPT and PWM charge controllers, the boxes that sit between solar panels and a battery in home systems, street lights and small commercial installations.

The range has since grown to off-grid inverters, inverter-chargers, lithium batteries and energy storage systems. In 2019 the company opened a manufacturing facility in Huizhou, in Guangdong province, and it works with more than 120 partners worldwide. Its factories carry ISO 9001, ISO 14001 and ISO 45001 certification, and products are listed with CE, FCC, ETL and UL marks depending on the model.

EPEVER product range

Charge controllers remain EPEVER’s core, from small PWM units to high-current MPPT models. The TEP series listed here is a higher-power MPPT line for 48 V battery banks, rated from 60 to 100 A of charging current, or roughly 3.1 to 5.2 kW of solar.

The model code packs in the key numbers: TEP6415 means 60 A of charging current, a battery class up to 48 V and a 150 V solar input limit; the TEP10425 is 100 A with a 250 V limit and two solar inputs.

What EPEVER is known for

Straightforward, certified hardware for small off-grid systems. EPEVER controllers suit a battery bank that needs a solar charger and nothing more, and they are sold through distributors and partners rather than installers. Documentation is functional rather than detailed, so read the manual’s battery settings carefully before the first charge.

Sizing panels for an EPEVER charge controller

With a charge controller, the panel string must stay under the controller’s PV voltage limit even on the coldest morning, and it must sit well above the battery voltage to charge at all. On the 150 V TEP models, three 41 V panels in series (about 135 V at −10 °C) is the limit, and the controller tracks best up to 108 V. The 250 V versions take five such panels and track up to 180 V.

Don’t size by the charging current alone. A 60 A controller on a 48 V bank handles about 3.1 kW of panels; beyond that, the surplus is simply not harvested. The string calculator checks your panels against the controller’s voltage and current limits.