BumpTag Configuration
BumpTags contain a wide range of information about your battery.
• Factory Ratings fields describe the physical capabilities and specifications of the battery
• User Settings fields contain your preferences about how you like to handle that battery
• Analysis Data fields contain information obtained by the charger while running an Analyze
operation
Factory Ratings
The Factory Ratings set hard limits which cannot be exceeded by the charger – they serve as the safety
“guardrails” to ensure that any user settings (or even potential software errors) cannot exceed the
capabilities of the battery.
STANDARD RATINGS
The following standard ratings must be given the appropriate values for your battery. There is no such
thing as a reasonable default value for these ratings – they muust be set to match your battery.
Appropriate values should be easily located on the battery label (see BumpTag Ratings example below).
• Chemistry: LiPo, LiHV, LiFe, LiIn, NiMh, NiCd, Pb
• Cells: total number of cells in this battery (includes all packs, if multi-pack)
• Capacity: The rated capacity of the pack
• Pack Max: The max discharge “C-rating” of the pack – typically 20-80C for modern LiPo
• Brand Name: The name of the pack manufacturer
ADVANCED RATINGS
The following ratings are also important and required, however they are intended for more advanced
users and default values will be automatically generated – do not change these values unless you know
what you’re doing:
• Charge Max C: The highest charge rate recommended by the manufacturer for this pack. Many
times this value is specified on the back label of the pack. For any Lithium pack, a default value of
10% of the Pack Max C-rating (up to 5C charge) will be used unless you specify otherwise.
• Cell Max Volts: Maximum cell voltage allowed (default is based on Chemistry type)
• Cell Min Volts: Minimum cell voltage allowed (default is based on Chemistry type)
• Cell IR: Cell Internal Resistance (default is calculated from Capacity and Pack Max C-rating)
NOTE: For safety reasons, Factory Ratings can only be written to the
BumpTag one time – once they are written, they cannot be modified.
MAKE SURE ALL VALUES ARE CORRECT BEFORE PROGRAMMING !!!
NOTE: For NiXX and Pb batteries, Pack Max Discharge and Charge
ratings are typically specified in amps or millamps, not in the form of a
C-rating, so use the amperage value displayed right below the C-rating
when adjusting these values for non-Lithium batteries.
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