53
different number of cells together in parallel. This is less a function of the Dual
PowerLab 8x2 and more about assuring proper connection of packs to the Dual
PowerLab 8x2.
If a pack is at 80% or less of its capacity when connected to an auto-detect speed
controller, the controller may lower its cut-off voltage. This could over-discharge the
pack during the flight. Auto-detect speed controllers should properly set cut-off voltage
if packs are charged to at least 90%.
To save time, stop charging when the pack reaches about 95% of capacity. That last
5% takes the longest. By default, User Presets notify you with two beeps when a pack
reaches 90% of capacity (that threshold can be easily adjusted using the Charge
Control Software).
Some cells may sag 0.10V within an hour after charging. This is normal as packs age.
In REVOLECTRIX’s opinion, over-discharging an A123 pack below 2.0V/cell will
damage the cells (contrary to some reports). Dual PowerLab 8x2 requires a minimum
pack voltage of 1.5V to activate charging. If an A123 pack is below this voltage, do not
try to repair the pack by boosting voltage. Even if you manage to repair the pack, it
will not have many cycles left and Dual PowerLab 8x2 will reject it for multiple reasons
(as indicated by displayed Safety Codes).
Storing packs
For best results, LiPo and A123 packs should be stored at approximately 50% of
capacity. Use Dual PowerLab 8x2
’s
LiPo All Brands Storage Charge
preset to
prepare LiPo packs for storage, and the
A123 All Cpcty Storage Charge
to prepare
A123 packs for storage.
LiPo packs charged to 100% should not be cooled below room temperature. Cells at
90% or less capacity can be cooled below 32ºF (0ºC).
CAUTION:
Be sure the storage preset matches the battery chemistry. Using
the incorrect preset will damage cells.
Содержание Dual PowerLab 8x2
Страница 1: ...Dual PowerLab 8x2 User s Guide firmware ver 1 02 or newer 2013 2014 FMA Inc Updated 09 02 2014 ...
Страница 17: ...17 See also Charge packs in parallel ...
Страница 19: ...19 ...
Страница 21: ...21 See also Expansion Channel Mode ...