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Jefferson Rodrigues
Jefferson Rodrigues

Balance Charger Bc 20 4 Pdf Free

Balance Charger BC20-4: A Review

If you are looking for a reliable and affordable charger for your LiPo or LiFe batteries, you might want to consider the Balance Charger BC20-4. This charger is designed to charge up to 4 cells in a balanced way, ensuring that each cell receives the optimal voltage and current. In this article, we will review the features, specifications, and performance of this charger, and compare it with some of the alternatives available on the market.

Features and Specifications

The Balance Charger BC20-4 is a compact and lightweight charger that can be plugged into any standard AC outlet. It has a simple and intuitive interface, with two knobs for adjusting the charge current and the float voltage, and a built-in ammeter for monitoring the charging process. The charger can handle battery packs ranging from 72V to 108V, in 6V steps, by means of a range-select resistor installed internally during set-up. The charger also has an optional LB-20 Line Boost Adapter that allows it to charge 120V battery packs.


The charger operates in a constant current mode until the battery voltage reaches the desired level, then switches to a constant voltage mode to finish charging. The charger has a built-in fan to keep the components cool, and a soft-start circuit to prevent current in-rush. The charger also has a delay-start circuit to prevent arcing of contacts when the AC power plug is inserted into the outlet. The charger has a temperature compensation feature that adjusts the float voltage according to the ambient temperature, as shown in Figure 1. This feature helps to optimize the battery performance and lifespan.

The charger has a power rating of 20W, and can deliver a maximum charge current of 3A. The current drain for balancing is 200mA. The charger is filtered to prevent radio and TV interference, and has multiple safety and protective features to prevent injury or damage. The charger has a heavy-gauge corrosion-resistant aluminum case that measures 6.5 x 3.5 x 2 inches, and weighs about 1.5 pounds.

Performance and Comparison

The Balance Charger BC20-4 is a reliable and efficient charger that can charge your batteries in a balanced way. The charger is easy to use, and has a clear display of the charging status. The charger can charge different types of batteries, such as LiPo or LiFe, by adjusting the float voltage accordingly. The charger can also charge different voltages of battery packs, by installing the appropriate range-select resistor or using the optional LB-20 Line Boost Adapter.

The Balance Charger BC20-4 is a good choice for electric vehicle owners who need a simple and affordable charger for their onboard batteries. The charger is