Handling And Installation - Century C12-100XLi User Manual

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3. Handling and Installation

• Before connecting the battery, check that the battery voltage is ≥13.3V. Recharge as required.

• Ensure that the cable connecting the battery terminals is correctly sized and in length.

• Ensure that the bolts on the terminals are ﬁrmly fastened to the recommended torque of 10~12Nm to avoid

loosening during operation.

• Ensure the maximum output voltage of any charging device connected to the battery does not exceed 14.6V

before connecting. Recommended charging voltage is 14.4V

• Side mounting with terminals on the upper side is acceptable but not recommended.

Where feasible, always install upright to optimise the performance under a dynamic condition

such as vibration.

• Fully charge each battery before use and if connecting them in series or parallel.

• When connecting in series or in parallel, ensure the capacity and voltage between each battery is consistent.

Any variance should be below 100mV. Do not connect different batches, types, old or new batteries in

series or parallel.

• To optimise batteries with balanced cells, it is advisable not to mix batteries from a different batch for series

or parallel connection. Each battery is labelled with a sequential production code i.e., number N-1 (such as

1-1, 1-2, 1-3, 1-4,) which shows the selected cells they are grouped with during the manufacturing process.

The ﬁrst number is the batch number, and the second number is the sequence within the batch.

• The battery can be connected in series up to 4 batteries, or in parallel up to 2 batteries. For example, four

12V100Ah batteries connected in series can create a 48V100Ah battery bank; and 2 batteries connected in

parallel can create a 12V200Ah battery bank (note: maximum discharge current remains 100A).

• Parallel batteries can only increase the capacity of the battery system and increase the working time of the

connected electrical devices. However, the maximum or peak discharge current can only be in accordance

with a single battery (100A).

• The total maximum conﬁguration in a string of series and parallel (i.e., 4S2P) is 8 batteries.

• Due to small variations in new LFP battery capacity, LFP batteries may be slightly unbalanced when

unpacked for multiple connection in series or parallel. BMS interruption of charging is likely to occur during

the initial charging which is considered normal. If the charger trips out, reset the charger until charging

continues normally. For best result, each battery should be charged individually before being connected in

series or parallel. Contact Century Yuasa Batteries for any further assistance.

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