SimpliPhi Battery Manual
Table Of Contents
- PHI 3.8-MTM Battery Models
- and gain control of your own power.
- SimpliPhi Power helps you manage your power as a personal resource.
- power generation source – solar, wind, generator – on or off grid, and protects your home and mission-critical business functions from power outages and
- constraints, toxic coolants and the risk of thermal runaway. Safe lithium ferrous phosphate (LFP). No cobalt. No toxic hazards.
- (BMS) to create a portfolio of high performance, scalable and enduring energy storage solutions that provide power security, resilience and daily cycling for savings on your utility bill – all with a 98% efficiency rate.
- Table of Contents
- 1.0 – Introduction
- 2.0 – Safety
- 3.0 – Pre-Installation
- 4.0 – Installation
- 5.0 – Programming
- 6.0 – Troubleshooting
- Appendix A – PHI Battery Safety & Green Attributes,
- Appendix B – PHI Battery Bank Sizing Guide
- Appendix C – PHI Approved External Chargers
- Appendix D – PHI Legacy Battery Parameters
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Example B: Three PHI 1.4 kWh-25.6Vnominal batteries (used in a 24-Volt system) must be paired with a 2,000-Watt solar
PV array wired to a 100 Amp-rated charge controller. In this case, the 2,000-Watt solar array is used to determine the
minimum PHI Battery quantity needed to prevent over-charging from the solar PV.
Watts = Amps × Volts
2,000 Watt Solar PV array = Amps × 24 Volts
(2,000 Watts)
(24 Volts)
= 83.33 Amps = MAX potential solar PV array output
83.3 Amps < 100 Amps --> 83.3 Amps
= MAX potential solar PV array output through the charge controller
(MAX potential charging current) ÷ (MAX Charge Rate per Battery)
= Minimum Battery quantity to prevent overcharge
(83.3A) ÷ (28.5A) = 2.92 --> round to 3
Refer to the Battery Bank Sizing for Maximum Instantaneous Charge Rate tables in Appendix B of this Manual for a
complete list of common charge controllers and the minimum quantity of PHI Batteries those controllers need to be paired
with to ensure that the PHI Battery bank does not over-charge (assuming that the charge controllers’ full current output
rating is utilized). Failing to do so will destroy the PHI batteries and Void the Warranty.
3.2.3 – Sizing for Maximum Instantaneous Charge Rate (AC Coupled)
In an AC Coupled system, charge controllers do not regulate the PV solar array’s output, and many battery-based inverters
fail to effectively regulate the array’s output for battery charging. Therefore, in an AC Coupled system, SimpliPhi assumes
that all the connected PV array’s potential power output will charge the system’s batteries. Determine the minimum
quantity of PHI Batteries needed to prevent over-charge from the solar PV array by dividing the solar array’s power rating
by the MAX Continuous Charge Rate per PHI Battery (found in Table 1.0 or on the relevant battery’s specification sheet).
Example
: Four PHI 3.8-M kWh-51.2V
nominal
batteries must be paired with 6 kW of AC Coupled solar PV to ensure the PHI
Battery bank does not over-charge from the solar array.
(6 kW)÷(1.92 kW)=3.13 --> round to 4
3.2.4 – Overall Battery System Sizing
Size the PHI battery bank so that the minimum number of batteries in the bank is the greater of the two figures obtained
from the Discharge and Charge calculations. For example, a system that requires 5 PHI Batteries to ensure that the battery
bank does not over-discharge and 3 PHI Batteries to ensure that the battery bank does not over-charge, should include a
final minimum quantity of 5 batteries. Failure to do so will destroy the PHI batteries and will Void the Warranty.
Note that this quantity of PHI Batteries is the minimum requirement to prevent over-discharge and over-charge from
an instantaneous power perspective. The system may need more PHI Batteries in the battery bank in order to meet the
system’s energy requirement (the amount of power the batteries must supply to the loads over time).
Refer to SimpliPhi’s online Battery Bank Sizing Estimator tool for assistance with sizing the PHI Battery Bank according to
connected loads and the desired number of days of autonomy: https://simpliphipower.com/support/battery-bank-sizing-
estimator/.