SkyRC BD250 Battery Discharger Analyzer 35A, 250W

Simple, robust and incredibly powerful - that's the new BD250 discharger from SkyRC. Almost any battery, regardless of type and size, can be used for discharging. Measuring battery capacity is also child's play with the BD250, the successor to the BD200. Not only has the device been significantly improved compared to its predecessor. It is also stylish and small, has a state-of-the-art cooling system and IXYS MOSFETs ensure that successful discharging is possible at a constant 250W.

Features

• Groundbreaking cooling system
• Simple and innovative operation
• Revised device fuse for easier replacement
• 40A replacement flat fuse included
• Almost any battery compatible for connection
• USB port for PC connection and software updates
• Receive even more data for performance optimization at 30-second intervals with the associated computer program

Technical Data:

Scope of delivery:

• BD250 discharger
• Discharging cable with XT60 plug
• 40A replacement flat fuse
• Operating instructions

Why discharge batteries?

1. To improve cell equalization

Moderate discharging can help to equalize the voltage of the individual cells. Particularly in the case of batteries where the cells drift apart slightly, this makes it easier for the charger to balance the cells when charging.

2. Making capacity fully usable

Discharging to a defined, low voltage level (typically approx.  3.5-3.7V per cell) ensures that the battery reaches its full capacity the next time it is charged. This is particularly interesting if you want maximum voltage ("top voltage") and energy yield in the next heat.

3. Optimize voltage peaks in the next heat

In certain classes (especially with stock classes or controlled motors), targeted discharging can result in the battery appearing somewhat "fresher" or "more aggressive" the next time it is charged, because it delivers higher voltage peaks when fully charged (e.g. more punch when accelerating).

4. Temperature management

Controlled discharging also lowers the battery temperature for the subsequent charge - important if the battery is still warm directly after a run. LiPos do not like to be stored hot or charged hot.

Important: Risks & limits

• Never discharge below 3.0V/cell! Deeper discharging damages the chemistry and can permanently damage cells.

• No "forced discharging" necessary after every run - only selectively if the setup or racing strategy requires it.

• Keep discharge currents moderate - 1-5A is usual, depending on battery capacity.

• LiPo storage mode ≠ Race preparation - Storage voltage (~3.8V/cell) is used for storage, not directly for racing.

In short:

Targeted discharging before charging can help prepare the battery for maximum performance in the next race session (better balance, higher peak power). However, it should  be used ina controlled and deliberate manner , otherwise there is a risk of doing more harm than good.