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.

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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 compatible with most electric vehicles that use 72V to 120V battery packs. The charger can also be used for other applications that require balanced charging of LiPo or LiFe batteries, such as RC models, drones, or robots.

The Balance Charger BC20-4 is not without its drawbacks, however. The charger has a relatively low power rating of 20W, which means that it can take a long time to charge large capacity batteries. For example, if you have a 100Ah battery pack at 72V, it would take about 24 hours to fully charge it with this charger at 3A. The charger also does not have any advanced features such as LCD display, data logging, or smart charging modes. The charger also requires manual adjustment of the charge current and float voltage, which can be inconvenient or inaccurate if you are not familiar with your battery specifications.

If you are looking for a more powerful or sophisticated charger, you might want to consider some of the alternatives available on the market. For example, the [iMax B6AC V2] is a popular balance charger that can handle up to 6 cells and deliver up to 50W of power. It has an LCD display that shows various parameters such as voltage, current, capacity, time, and temperature. It also has multiple charging modes such as fast charge, storage charge, discharge, cycle, balance, etc. It can charge various types of batteries such as LiPo, LiFe, LiIon, NiMH, NiCd, Pb, etc. It also has an internal AC/DC switch power supply that can accept input from 100V to 240V AC, or 11V to 18V DC. The iMax B6AC V2 costs about $40, which is slightly more expensive than the Balance Charger BC20-4, but offers more features and performance.

Conclusion

The Balance Charger BC20-4 is a simple and affordable charger that can charge your LiPo or LiFe batteries in a balanced way. It has a compact and lightweight design, and 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. It can handle battery packs ranging from 72V to 108V, in 6V steps, by means of a range-select resistor installed internally during set-up. It also has an optional LB-20 Line Boost Adapter that allows it to charge 120V battery packs. It has a temperature compensation feature that adjusts the float voltage according to the ambient temperature, to optimize the battery performance and lifespan. It has a power rating of 20W, and can deliver a maximum charge current of 3A.

The Balance Charger BC20-4 is a good choice for electric vehicle owners who need a simple and affordable charger for their onboard batteries. It is compatible with most electric vehicles that use 72V to 120V battery packs. It can also be used for other applications that require balanced charging of LiPo or LiFe batteries, such as RC models, drones, or robots. However, the charger has a relatively low power rating of 20W, which means that it can take a long time to charge large capacity batteries. It also does not have any advanced features such as LCD display, data logging, or smart charging modes. It also requires manual adjustment of the charge current and float voltage, which can be inconvenient or inaccurate if you are not familiar with your battery specifications.

If you are looking for a more powerful or sophisticated charger, you might want to consider some of the alternatives available on the market, such as the iMax B6AC V2, which can handle up to 6 cells and deliver up to 50W of power. It has an LCD display that shows various parameters such as voltage, current, capacity, time, and temperature. It also has multiple charging modes such as fast charge, storage charge, discharge, cycle, balance, etc. It can charge various types of batteries such as LiPo, LiFe, LiIon, NiMH, NiCd, Pb, etc. It also has an internal AC/DC switch power supply that can accept input from 100V to 240V AC, or 11V to 18V DC.

In conclusion, the Balance Charger BC20-4 is a reliable and efficient charger that can charge your batteries in a balanced way. It is easy to use, and has a clear display of the charging status. It is suitable for electric vehicle owners who need a simple and affordable charger for their onboard batteries. However, if you need a more powerful or sophisticated charger, you might want to look for other options on the market.

Figure 1: BC-20 Temperature Compensation Curve