Multiple Lithium Batteries
LITHIUM BATTERIES MULTIPLE SETS IN PARALLEL AND SERIES HAS MAJOR ADVANTAGES. This technical article is designed to give value to the reader through more knowledge on Lithium Batteries. Lithium Batteries consist of 4 sets of Lithium cells connected in series and make up the bulk of the Lithium…
LITHIUM BATTERIES MULTIPLE SETS IN PARALLEL AND SERIES HAS MAJOR ADVANTAGES.
This technical article is designed to give value to the reader through more knowledge on Lithium Batteries.
Lithium Batteries consist of 4 sets of Lithium cells connected in series and make up the bulk of the Lithium Battery casing. The cells run in vertical layers longitudinally along the battery length.
At the top of the battery casing are the management units.
Safiery Lithium Batteries are fitted with not just a Cell Balancing Management Unit but an additional Battery Management Unit which allows these batteries to be installed in parallel or series connection. This additional management unit is included in the price.
Here is a photo in the factory test bay of 6 Safiery 125Ahr batteries under test in parallel configuration. They are being stressed to maximum charge and discharge. There is a total of 6 x 125 = 700 Ahrs of capacity here.
The benefit of multiple Lithium Batteries in parallel compared to a single battery of similar capacity are:
- Can provide power to larger inverter and operate any of the devices in the table below:
Required for Nespresso Mini Espresso
Required for Microwave and Induction cooktop
Required for Aircon from Battery
Rating in kw
Mini Expresso
1240W
Induction 2000W
or
Microwave 1600W
Startup 4.3kw
Operating current with Truma rooftop unit is 70A DC after startup
Continuous discharge current
100A
80-120A
120A
Burst discharge current
160A Max for 15 min
460A for 1-2 secs
2 x 125 Ahr Safiery Batteries Current Output
200A Continuous
200A Continuous
200A Continuous
700A burst for 3 secs
- In normal everday use, 2 x 125 Ahr will have a lower depth of discharge compared to a single 200Ahr Battery. A lower depth of discharge contributes to a longer cycle life of the batteries.
- Safiery 125 Ahr can be installed on any side except they can’t be inverted. The shape combinations give more flexibility in locating with ease of access. Combination sizes are:
All in mm
Placed on top of each other lengthwise terminals facing forward
Placed side by side, terminals facing in up position
Placed side by side with small face down, terminals facing forward
Combined Dimensions of
2 x 125 ahr
Safiery lithium
318 L
430 H
165 D
318 L
215 H
330 D
330 L
318 H
215 D
Maximum Capacity of Multiple Safiery Lithium Batteries:
In Parallel Sets
In Series Set
In Series and Parallel
Combined Voltage and Ahrs of
Multiple 125 ahr
Safiery lithium
6 x 125 ahr
Safiery lithium
12.8V (12V Nominal)
700Ahrs
4 x 125 ahr
Safiery lithium
51.2 V (48V nominal)
125 Ahrs
6 x 125 ahr
Safiery lithium
25.6 V (24V nominal)
375 Ahrs
Battery Management Unit maps to Safiery App so the user can see the exact value of the Lithium cells.