14
The table below, extending to the following two pages, includes all the specifications of the TROPPO
battery that need to be understood.
It also includes additional information to help the installer to understand the specifications and
parameters of the battery.
More detailed information on specific settings required for Victron, Selectronics, Voltronics and SunGrow
hybrid inverters are available separately. These are the inverter brands currently used by RedEarth. If your
inverter is not included in the above, please contact RedEarth for further instructions.
Troppo 4841 Self-Managed LFP Battery Module
The TROPPO battery incorporates a self-managed BMS that does not require commuication with the inverter/charger to
operate. It does however require the inverter/charger settings to be within the specification of the battery as listed below.
Electrical Characteristics
Installer Information
Nominal Capacity
4.1kWh / 79.8Ah
79.8Ah x 51.2V
DC
(nominal battery voltage) = 4,086Wh
(approx. 4.1kWh) 16S21P = 336 x 3,800mAh cells.
Usable Capacity
3.69kWh (90% of nominal
capacity)
Useable capacity is the capacity available when operating
the battery within the normal voltage range of the
connected inverter/charger (48.0-57.6V
DC
). Nominal
capacity is the capacity when the battery is operated from
its lowest shutdown voltage up to its maximum charge
voltage in a laboratory environment (40.0-58.4V
DC
).
Nominal DC Voltage
51.2V
3.2V per cell (LFP type) x 16 cells in series (16S) = 51.2V
DC
Maximum Discharge
Current
63A (Limited by circuit breaker)
63A 2-pole MCB protects battery and cabling. K-curve
breaker characteristic (e.g. thermal shutdown in 3-60 mins
at 75 amps.
Lifetime Continuous
Discharge Current
40A (C2)
Recommend C2 rate for LFP chemistry = 79.8Ah x 0.5 =
40A
DC
for longest life.
Maximum Charge Current
63A (Limited by circuit breaker)
BMS over charging current protection is set at 78A +/- 8A
however the 63A K-curve MCB will switch off as design.
Lifetime Continuous
Charge Current
16A
Recommended is 40% of C2 rate = 16A (C2 rate = 79.8Ah x
0.5 = 40A
DC
) for maximum life.
Maximum Power on
discharge (kW)
Approx. 3kW
Maximum 63A x ~50V = 3,000W+
Recommended operating
voltage range
48.0 - 57.6V
DC
48.0V
DC
ensures the inverter stops supplying loads before
the battery shuts down internally. 57.6V
DC
is required for
the balancing circuit inside the BMS to balance all the cell
strings at the top of charge.
Charge / Discharge Cycles
of certified 3,800mAh cells
at 1C rate (to 80% Residual
Capacity
2,000@100% DoD / 4,000@80%
DoD / 7,000@50% DoD @ 25°C
operating temp.
4,000 cycles = 10.9 years at 80% daily DoD (Depth of
Discharge) when charging and discharging at 1C rate
(79.8A). This is for the cells used in the Troppo Battery.
Projected MWh delived
over battery lifetime
13.08 MWh at 80% DoD
= 4,000 cycles x 4.086kWh x 80%DoD = 13.08MWh
X. Troppo Battery Specifications