FELICITY FLA24100 24V 100AH 2.56KWH Battery (Grade A)
FELICITY FLA24100 is a premium 24V 100Ah 2.56kWh Grade A lithium iron phosphate (LiFePO4) battery engineered as the dedicated native 24V lithium storage solution in the FELICITY battery range — purpose-built for direct compatibility with all 24V solar inverters, MPPT charge controllers, and off-grid power systems without requiring series connection of multiple 12V units. Delivering 2.56kWh of energy storage per unit from Grade A LiFePO4 cells with a fully integrated Battery Management System (BMS) and 4,000+ cycle life, the FLA24100 is the optimal lithium storage choice for every solar installation built around the FELICITY IVEM 4024-II 4KVA 24V inverter and any other 24V system architecture.
The native 24V architecture of the FLA24100 is its defining advantage — eliminating the series connection of two 12V batteries required to reach 24V system voltage, removing the associated series wiring complexity, inter-battery imbalance risk, and dual BMS management overhead, while delivering the full 2.56kWh capacity from a single self-contained, fully managed lithium unit.
The Native 24V Advantage — Why Architecture Matters
For 24V solar systems, there are two paths to achieving the required system voltage from lithium batteries:
| Feature | 2× 12V Series (e.g. 2× FLA12100) | Native 24V (FLA24100) |
|---|---|---|
| System voltage | 24V (via 2 units in series) | 24V native — single unit |
| Energy per configuration | 2.56kWh (2 × 1.28kWh) | 2.56kWh single unit |
| Units required | 2 units | 1 unit |
| Series connections | 1 series connection | Zero — single unit |
| BMS architecture | 2 separate 12V BMS units | Single integrated 24V BMS |
| Cell balancing scope | Per 12V unit only | Across entire 24V 100Ah pack |
| Installation complexity | Higher — 2 units, series wiring | Minimal — single unit, direct connect |
| Series connection failure risk | Present | Eliminated |
| Parallel expansion | Series + parallel configuration | Simple parallel connection |
| Best for | Modular flexibility | 24V system simplicity and reliability |
For any installation built around a 24V inverter or charge controller, the FLA24100 native 24V architecture delivers superior installation efficiency, reduced connection failure risk, and cleaner BMS management — all from a single plug-and-play unit.
Where the FLA24100 Fits in the FELICITY Battery Range
The FELICITY lithium battery range covers three native voltage tiers — each optimized for its corresponding inverter system voltage:
| Battery | Voltage | Capacity | Energy | Compatible Inverters |
|---|---|---|---|---|
| FLA12100 | 12V | 100Ah | 1.28kWh | 12V systems |
| FLA12200 | 12V | 200Ah | 2.56kWh | 12V systems |
| FLA24100 | 24V | 100Ah | 2.56kWh | 24V systems |
| FLA48300TG2 | 48V | 300Ah | 15kWh | 48V systems |
The FLA24100 fills the dedicated 24V native lithium tier — ensuring that users of the FELICITY IVEM 4024-II and any other 24V inverter architecture have a purpose-built, correctly voltage-matched lithium battery that connects directly without series configuration.
Why Grade A LiFePO4 at 24V
The Grade A cell specification is the foundational quality guarantee of the FLA24100 — ensuring full rated performance, correct BMS operation, and the rated 4,000+ cycle service life:
- Full 100Ah rated capacity from day one — no derating or capacity adjustment required
- Matched cell internal resistance across the full 24V pack — consistent current distribution minimizing heat generation and preventing BMS imbalance events
- Uniform cell voltage across all cell groups — enabling the integrated BMS to maintain optimal balance throughout the full rated cycle life
- New, virgin Grade A cells — zero prior use — no recycled, reconditioned, or rejected cells
- Full manufacturer performance warranty — 4,000+ cycles at 80% DOD achievable only under Grade A cell quality and correct 24V LiFePO4 charging profile conditions
Why Choose the FELICITY FLA24100?
Purpose-Built for the FELICITY IVEM 4024-II Ecosystem The FLA24100 is the recommended lithium battery for the FELICITY IVEM 4024-II 4KVA 24V High Frequency Inverter — Kenya’s most popular entry-level FELICITY all-in-one solar inverter. The native 24V output connects directly to the IVEM 4024-II battery terminals with no series wiring, no voltage converters, and no configuration beyond selecting the LiFePO4 battery type setting. A single FLA24100 paired with the IVEM 4024-II and a solar array constitutes a complete, fully operational lithium solar power system — the simplest and most reliable 24V lithium solar system configuration available in the FELICITY range.
2.56kWh Per Unit — Effective Usable Energy Doubles Lead-Acid Equivalents At 95–100% usable depth of discharge, the FLA24100 delivers approximately 2.43kWh of usable energy per unit — compared to the approximately 1.2kWh of usable energy from a conventional 24V 100Ah GEL or AGM battery at 50% safe discharge depth. The lithium advantage means the FLA24100 provides nearly double the effective backup runtime from the same nominal capacity rating — delivering significantly longer overnight autonomy and extended backup duration from a single battery unit.
Built-In 24V Battery Management System (BMS) The integrated 24V native BMS manages the entire 100Ah cell pack as a single coordinated system — providing comprehensive real-time protection and management optimized for the 24V architecture:
- Full-pack active cell balancing — continuously equalizes charge across all cell groups in the complete 24V pack, preventing cumulative imbalance that degrades capacity over time
- Overcharge protection — disconnects charge input if any cell group voltage approaches unsafe limits, protecting cell chemistry and preventing thermal events
- Over-discharge protection — disconnects load output before any cell group reaches damaging low voltage thresholds, preserving long-term capacity retention across thousands of cycles
- High-current overcurrent and short circuit protection — instantly interrupts abnormal current events protecting cells and connected inverter equipment
- Over-temperature protection — monitors cell temperatures and restricts charge and discharge operations outside safe thermal limits
- Accurate state of charge (SOC) monitoring — tracks real-time 24V pack capacity for accurate inverter runtime prediction and system energy management
- Communication interface — RS485 or CAN bus communication with compatible 24V inverters for integrated system monitoring and BMS-to-inverter data exchange
4,000+ Cycle Life — A Decade of Daily Solar Cycling Rated for over 4,000 complete charge-discharge cycles at 80% depth of discharge — equivalent to more than 10 years of daily solar cycling under standard operating conditions. This 5–8× cycle life advantage over GEL and AGM alternatives means the FLA24100 outlasts multiple replacement sets of lead-acid batteries across a 10–15 year solar system lifetime — delivering significantly lower total cost of ownership despite the higher initial investment.
Lightweight — Approximately Half the Weight of Lead-Acid Equivalents At approximately 22–24kg, the FLA24100 weighs roughly half of an equivalent 24V 100Ah lead-acid battery bank — simplifying installation, reducing structural load requirements, and enabling roof-mounted, wall-mounted, and space-constrained battery enclosure configurations that would be impractical with heavier lead-acid alternatives.
Fast Charge Acceptance The FLA24100 accepts charge at significantly higher rates than lead-acid batteries — drawing maximum MPPT controller output without the extended voltage-limited absorption phase that constrains lead-acid charging speed. Faster charge acceptance translates into more complete daily recharge cycles during limited solar windows, reduced generator runtime in hybrid backup configurations, and faster battery replenishment after extended grid outages or prolonged overcast periods.
Flat Discharge Voltage Curve The FLA24100 maintains a flat, stable 24V terminal voltage throughout approximately 90% of its discharge cycle — delivering consistent inverter output performance, stable appliance operation, and accurate state-of-charge indication across the full usable capacity range. The progressive voltage sag of lead-acid batteries from full to empty degrades inverter output quality and reduces effective runtime as the battery approaches discharge — a problem the FLA24100’s flat discharge curve eliminates entirely.
Inherently Safe LiFePO4 Chemistry LiFePO4 is the safest lithium chemistry for stationary residential and commercial energy storage — with high thermal and chemical stability that makes thermal runaway extremely unlikely under both normal and abusive operating conditions. The FLA24100 is the correct lithium chemistry choice for enclosed residential battery enclosures, indoor equipment rooms, and any installation where battery safety in proximity to people, property, and sensitive equipment is paramount.
Scalable Parallel Expansion Additional FLA24100 units connect in simple parallel to expand total 24V system storage capacity in 2.56kWh increments — without any series connection complexity, voltage matching requirements, or BMS reconfiguration:
| Units | Total Capacity | Total Energy | Usable Energy |
|---|---|---|---|
| 1× FLA24100 | 100Ah | 2.56kWh | ~2.43kWh |
| 2× FLA24100 | 200Ah | 5.12kWh | ~4.86kWh |
| 3× FLA24100 | 300Ah | 7.68kWh | ~7.30kWh |
| 4× FLA24100 | 400Ah | 10.24kWh | ~9.73kWh |
Maximum recommended parallel strings: 4. Always use identical Grade A LiFePO4 batteries from the same production batch.
Runtime Estimation Guide — Single FLA24100 with FELICITY IVEM 4024-II
| Load | Usable Energy (~2.43kWh) | Estimated Runtime |
|---|---|---|
| 200W (lights + phone charging + fan) | 2.43kWh | ~12 hours |
| 300W (lights + TV + fan) | 2.43kWh | ~8 hours |
| 500W (fridge + lights + TV) | 2.43kWh | ~4.9 hours |
| 800W (fridge + AC fan + lights) | 2.43kWh | ~3 hours |
| 1,000W (light commercial load) | 2.43kWh | ~2.4 hours |
Runtime estimates based on 95% usable depth of discharge from a single FLA24100 unit. Actual runtime varies with load profile, inverter efficiency, temperature, and battery age. Multiple parallel FLA24100 units scale all runtimes proportionally.
FLA24100 vs Lead-Acid 24V 100Ah — 10-Year Cost of Ownership
| 24V GEL / AGM 100Ah Bank | FLA24100 | |
|---|---|---|
| Usable energy per cycle | ~1.2kWh | ~2.43kWh |
| Cycle life | 500–800 cycles | 4,000+ cycles |
| Replacements over 10 years | 3–4 sets | 0 replacements |
| Weight | ~55–60kg (2× 12V units) | ~22–24kg |
| Series connections required | 1 series connection | Zero |
| Built-in BMS | None | Full integrated 24V BMS |
| Maintenance | Zero | Zero |
| 10-year total cost | Higher — multiple replacements | Lower — single investment |
Ideal Applications
- FELICITY IVEM 4024-II solar systems — the recommended native 24V lithium battery for Kenya’s most popular 4KVA 24V FELICITY inverter, delivering direct plug-and-play installation and maximum system performance
- Residential solar backup systems on 24V architecture — primary lithium energy storage for homes with 24V inverter installations requiring extended overnight backup and full household load support
- Off-grid homes and rural electrification — reliable long-life native 24V lithium storage for properties without grid access, minimizing battery replacement frequency and maintenance requirements over extended off-grid operation
- Small business and retail backup — 24V lithium backup for POS systems, refrigeration, lighting, CCTV, and security systems requiring extended backup during KPLC outages
- Solar street lighting systems — native 24V lithium storage for standalone and networked street light installations requiring high daily cycling reliability and long service life
- Borehole and water pump buffer storage — 24V lithium buffer battery for solar-powered pump systems providing reliable daily cycling storage without maintenance
- Schools and community solar — long-life low-maintenance 24V lithium banks for community solar installations in 24V system configurations
- Medical and clinic backup — reliable, safe 24V lithium storage for vaccine refrigeration, diagnostic equipment, and critical backup power in health facilities operating on 24V solar systems
- Telecommunications and remote monitoring — native 24V lithium storage for remote sensor networks, off-grid communications equipment, and monitoring infrastructure designed around 24V architecture
- Marine and mobile applications — lightweight sealed 24V lithium storage for solar-powered vessels, caravans, mobile clinics, and field operations built on 24V electrical systems











