Victron energy Phoenix 12/30 (1+1) Bedienungsanleitung Seite 7

Some manufacturers of battery chargers recommend impulse charging to
reverse the sulphation. However, most battery experts agree there is no
conclusive evidence that impulse charging is better than charging with a
low current / high voltage. This is confirmed by our own tests.
4.10. Lithium-ion (LiFePO₄) batteries
Li-ion batteries are not subject to sulphation and do not have to be fully
charged on a regular basis.
However, Li-ion batteries are highly sensitive to high or low voltages.
This is why Li-ion batteries are often equipped with an integrated system
for cell balancing and to protect against low voltages (UVP: Under Voltage
Protection).
Important note:
NEVER attempt to charge a lithium-ion battery if the temperature of the
battery is below 0°C.
4.11. Remote on-off
There are three ways to switch on the device:
1. Short the L and H pins (factory default)
2. Pull the H pin to a high level (e.g. the battery plus)
3. Pull the L pin to a low level (e.g. the battery minus)
4.12. Alarm LED
If an error occurs, the ALARM LED will light up red. The status LEDs indicate the
type of error with a blink code. See the following table for the possible error
codes.
Error LOW
Bulk time
protection
Internal
Error
Charger
over-
voltage
2
For more information about lithium-ion batteries, see
battery-12,8v/
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BULK ABS
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FLOAT STORAGE
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http://www.victronenergy.com/batteries/lithium-
ALARM
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