LG Energy Solution RESU Prime 16H vs Pylontech Force-H2
The LG Energy Solution RESU Prime 16H wins this battery comparison by a decisive margin. It delivers 15.2 kWh of usable storage with 7 kW continuous output and a 6,000-cycle rating. The 8.4 kWh capacity advantage provides 11 additional hours of essential-load backup.
Key Differences
- • LG Energy Solution RESU Prime 16H provides 15.2 kWh vs 6.75 kWh usable capacity.
Specifications Breakdown
Usable Storage Capacity
The LG Energy Solution RESU Prime 16H provides 15.2 kWh of usable capacity (16 kWh total, 95% DoD), while the Pylontech Force-H2 offers 6.75 kWh usable (7.1 kWh total, 95% DoD). At an average essential-load consumption rate of 750 watts, the LG Energy Solution RESU Prime 16H provides approximately 20.3 hours of backup versus 9.0 hours for the Pylontech Force-H2. The LG Energy Solution RESU Prime 16H's 8.4 kWh capacity advantage translates to roughly 11 additional hours of essential-load backup during a grid outage. The LG Energy Solution RESU Prime 16H is scalable up to 2 units (30 kWh total), while the Pylontech Force-H2 scales up to 12 units (81 kWh total).
Power Output
The LG Energy Solution RESU Prime 16H delivers 7 kW continuous and 9 kW peak power, while the Pylontech Force-H2 provides 3.55 kW continuous and 7.1 kW peak. The LG Energy Solution RESU Prime 16H's higher continuous output means it can simultaneously power more demanding appliances during an outage. A central air conditioner typically draws 3-5 kW, a refrigerator 0.1-0.2 kW, and an EV Level 2 charger 7-11 kW. Peak power rating matters for motor-driven loads with high startup current, such as air conditioners, well pumps, and sump pumps. The LG Energy Solution RESU Prime 16H's 9 kW peak is suitable for lighter startup loads.
Battery Chemistry & Cycle Life
The LG Energy Solution RESU Prime 16H uses LFP chemistry with a rated cycle life of 6,000 cycles (approximately 16.4 years of daily cycling), while the Pylontech Force-H2 uses LFP with 6,000 cycles (approximately 16.4 years). Both use LFP chemistry, which is considered the gold standard for residential energy storage due to its inherent safety, long cycle life, and environmental friendliness. Identical cycle ratings mean both batteries have the same expected operational lifespan under daily cycling.
Round-Trip Efficiency
The LG Energy Solution RESU Prime 16H achieves 95% round-trip efficiency versus 95% for the Pylontech Force-H2. Identical round-trip efficiency means both batteries lose the same proportion of stored energy to heat during each charge-discharge cycle. Higher round-trip efficiency is especially valuable in time-of-use rate environments where you are storing cheap off-peak energy for expensive peak-hour consumption.
Warranty & Long-Term Protection
The LG Energy Solution RESU Prime 16H carries a 10-year warranty and 22.4 MWh throughput, while the Pylontech Force-H2 offers 10 years. Both offer identical warranty duration. Battery warranties typically guarantee the unit will retain 60-70% of original capacity by end of warranty, so the length of coverage directly impacts your financial risk over the system's lifetime.
Specification Comparison
| Specification | LG Energy Solution RESU Prime 16H | Pylontech Force-H2 |
|---|---|---|
| Capacity | 16 kWh | 7.1 kWh |
| Usable Capacity | 15.2 kWh | 6.75 kWh |
| Power Output | 7 kW | 3.55 kW |
| Chemistry | LFP (Lithium Iron Phosphate) | LFP (Lithium Iron Phosphate) |
| Efficiency | 95% | 95% |
| Cycle Life | 6,000 | 6,000 |
| Weight | 120 kg | 82 kg |
| Warranty | 10 years | 10 years |
| Scalable | Yes | Yes |
5-Dimension Head-to-Head Analysis
1. Storage Capacity
Winner: LG Energy Solution RESU Prime 16HThe LG Energy Solution RESU Prime 16H provides 15.2 kWh versus 6.75 kWh — 8.4 kWh more usable storage. At typical essential-load consumption of 0.75 kW, this equals approximately 11 additional hours of backup power. This is a substantial capacity gap.
2. Power Output
Winner: LG Energy Solution RESU Prime 16HThe LG Energy Solution RESU Prime 16H delivers 7 kW continuous versus 3.55 kW. Sufficient for most essential backup loads including a small AC unit. The 3.5 kW power gap significantly impacts what appliances you can run during outages.
3. Chemistry & Longevity
Winner: TieBoth use LFP chemistry with identical 6,000-cycle ratings. LFP chemistry provides excellent thermal stability, long cycle life, and no cobalt dependency.
4. Round-Trip Efficiency
Winner: TieBoth achieve 95% round-trip efficiency — identical energy retention per charge cycle.
5. Warranty Coverage
Winner: TieBoth carry 10-year warranties — equal long-term manufacturer protection.
LG Energy Solution RESU Prime 16H
The LG RESU Prime 16H is a high-voltage residential battery that pairs LFP chemistry with 16 kWh of total capacity for dependable long-duration energy storage. Operating at 400V nominal, it achieves 95% round-trip efficiency and works with a wide range of compatible hybrid inverters from SMA, SolarEdge, and others. The compact design delivers excellent energy density, fitting comfortably in a garage or utility room. LG backs it with a 10-year warranty and 22.4 MWh throughput guarantee, reflecting confidence in the LFP cell longevity.
Pros
- + High-voltage architecture pairs efficiently with leading hybrid inverters
- + 16 kWh capacity covers most household overnight energy needs
- + 95% round-trip efficiency among the best for high-voltage batteries
- + LFP chemistry with robust 22.4 MWh throughput warranty
Cons
- - Limited to 2-unit stacking for 32 kWh maximum
- - Narrower operating temperature range than some competitors at -10 to 45 degrees C
Pylontech Force-H2
The Pylontech Force-H2 is a high-voltage battery system starting at 7.1 kWh per stack (2 modules + BMS). Each module adds 3.55 kWh, and up to 4 modules per stack bring capacity to 14.2 kWh. Multiple stacks can be paralleled for up to 85.2 kWh. The high-voltage design (96-384V) pairs with compatible hybrid inverters.
Pros
- + High-voltage design reduces cable losses for large systems
- + Highly scalable from 7.1 to 85.2 kWh across multiple stacks
- + 95% depth of discharge maximizes usable capacity
- + 6,000 cycle LFP chemistry at competitive pricing
Cons
- - Indoor-only installation restricts placement options
- - Minimum 2-module stack — no small entry point
- - More complex installation than 48V plug-and-play systems
Choose LG Energy Solution RESU Prime 16H If...
- ✓ You need more backup storage to cover overnight consumption or extended outages
- ✓ You need to power demanding appliances (AC, EV charger) simultaneously during outages
- ✓ Homeowners with compatible hybrid inverters who want a high-capacity, high-efficiency DC-coupled LFP battery
Choose Pylontech Force-H2 If...
- ✓ You want the flexibility to expand storage capacity over time (up to 12 units)
- ✓ Larger residential and small commercial installations using high-voltage hybrid inverters
Our Recommendation
The LG Energy Solution RESU Prime 16H is the decisive winner in this battery comparison, outperforming the Pylontech Force-H2 in 2 of 5 dimensions. Unless you have a specific requirement that the Pylontech Force-H2 uniquely addresses, the LG Energy Solution RESU Prime 16H is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, LG Energy Solution RESU Prime 16H or Pylontech Force-H2?
The LG Energy Solution RESU Prime 16H wins this battery comparison by a decisive margin. It delivers 15.2 kWh of usable storage with 7 kW continuous output and a 6,000-cycle rating. The 8.4 kWh capacity advantage provides 11 additional hours of essential-load backup.
Which battery lasts longer?
The LG Energy Solution RESU Prime 16H is rated for 6,000 cycles versus 6,000 for the Pylontech Force-H2. Both have identical expected cycle life. LFP chemistry generally outlasts NMC in cycle life testing.
Which battery provides more backup power?
The LG Energy Solution RESU Prime 16H provides 7 kW continuous (9 kW peak) versus 3.55 kW continuous (7.1 kW peak) for the Pylontech Force-H2. LG Energy Solution RESU Prime 16H can run more appliances simultaneously during an outage. A central AC typically needs 3-5 kW, a refrigerator 0.2 kW, and an EV charger 7-11 kW.
Can I expand LG Energy Solution RESU Prime 16H or Pylontech Force-H2 storage later?
LG Energy Solution RESU Prime 16H: Yes, up to 2 units for 30 kWh total. Pylontech Force-H2: Yes, up to 12 units for 81 kWh total. Pylontech Force-H2 offers more expansion potential.
Which battery chemistry is safer?
Both use LFP (Lithium Iron Phosphate) chemistry, which is the safest lithium battery chemistry for residential use. LFP does not undergo thermal runaway, uses no cobalt, and is inherently stable.
Related Resources
Last updated: February 2026