Discover Operating Manual

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7.2 Charging

Before charging the battery make sure to read and understand the instructions that come with the Power Conversion device. Never

attempt to charge a battery without rst reviewing and understanding the instructions for the Power Conversion device being used.

Do not use or install a battery temperature sensor.

▲ CAUTION!

Always make sure the chargers charging curve meets the battery’s

charging requirement; never charge a visibly damaged battery; never

charge a frozen battery.

1. Connect the Power Conversion device’s charger leads to the battery.

2. Ensure the charger and battery side connections are tight.

3. Set the charger to ON

4. Set the battery to ON

▲ CAUTION!

NOT ALL CHARGERS ARE CAPABLE OF CHARGING LITHIUM BATTERIES

CONFIRM that your chosen charger is incapable of producing transient

spikes that exceed the published terminal voltage limits for the battery.

Spikes are fast, short duration electrical transients in voltage (voltage spikes), current (current spikes), or transferred energy

(energy spikes) in an electrical circuit. Voltage spikes usually happen when the AC/DC adapter is plugged in, or charge current is

cut off quickly. Multi voltage chargers are constructed using transformers that may be capable of producing spikes that exceed the

maximum ratings of the Discover AES Battery. You must ensure that the charger being supplied:

• Meets the recommended charge curve

• Incapable of exceeding Discover’s maximum terminal voltages

7.3 Charge Curve

1. Charge at constant current to 3.4 V per cell module (Bulk).

2. Maintain constant voltage 3.4 V per cell module (Absorption).

3. Terminate when charge current drops below 2A.

4. Optional Float at 3.35V per cell module (Float).

Absorption

Charge Current % of Bulk Charge C-Rate [%]

Voltage - U Current - I

Bulk

Cell Voltage [V]

2.8

20%

40%

60%

80%

100%

3.2

3.4

3.6

I1Max

I1Rec