Sungrow Battery System Calculator

Size Sungrow's stackable LFP battery system — SBR HV 9.6–25.6 kWh or SBH HV Pro up to 51.2 kWh. Get usable capacity, 95% RTE, 6,000-cycle life, $/kWh value tier, ITC savings, and comparison vs Pylontech and BYD.

kWh
modules
cycles/yr
$/kWh
Sungrow battery recommendation
SBR HV Battery 19.2 kWh (2 modules)15.4 kWh usable @ 80% DoD
Recommended modelSBR HV Battery 19.2 kWh (2 modules)
ChemistryLFP (Lithium Iron Phosphate) — safest chemistry
Round-trip efficiency (RTE)95%
Usable capacity15.4 kWh (80% DoD)
Cycle warranty6,000 cycles @ 80% capacity
Product warranty10 years
Estimated system cost$7,500 – $9,000
Cost per kWh installed$420/kWh — value tier
Federal ITC (30%)-$2,475
Net cost after ITC$5,775
Annual throughput (usable)4,608 kWh/yr
Annual electricity savings$788/yr
10-year savings$7,880
Simple payback (after ITC)7.3 yrs
Expected cycle EOL at this usage~20 years to 80% capacity
Sungrow ecosystem saving~$800 (no gateway needed)
Brand$/kWhCyclesRTEChemistryWarranty
Sungrow SBR/SBH$420600095%LFP10 yr
Pylontech Force H2$390600095%LFP10 yr
BYD Battery-Box HVS$450600096%LFP10 yr
Tesla Powerwall 3$680n/a97.5%NMC/LFP10 yr
Link copied to clipboard

How to Use This Calculator

Enter your storage capacity and module count

Sungrow's SBR/SBH battery system is built on stackable 9.6 kWh modules. Enter your target capacity — 9.6 kWh works for essential backup, 19.2 kWh handles a whole home overnight, and up to 51.2 kWh (8 modules, SBH HV Pro) enables near-off-grid operation. Enter how many modules you plan to stack — this affects floor load and installation cost.

Sungrow hybrid inverter compatibility

If you have or plan to install a Sungrow SH series hybrid inverter (SH5.0RS, SH8.0RS, SH10RS etc.), the SBR battery communicates natively via CAN bus with no additional gateway or BMS adapter required. This saves $600–900 in equipment cost and simplifies commissioning significantly. If you're using a third-party inverter, you'll need to verify BMS communication compatibility.

Cycle count and electricity rate

Enter how many full charge-discharge cycles you expect per year. Daily solar cycling is approximately 300–365 cycles/year. If you primarily use the battery for emergency backup (not daily), 20–50 cycles/year is typical. The electricity rate drives your annual savings calculation — check your utility bill for the per-kWh rate.

The Formula

Usable Capacity = Total kWh × DoD (80%) Annual Throughput = Usable kWh × Cycles per Year Annual Savings = Annual Throughput × RTE (95%) × $/kWh System Cost = Mid-range installed cost estimate ITC (30%) = System Cost × 0.30 Net Cost = System Cost − ITC Simple Payback = Net Cost ÷ Annual Savings Cycle EOL = 6,000 cycles ÷ Cycles per Year

The 95% round-trip efficiency means for every 1 kWh you put into the battery, you get 0.95 kWh back out. At 6,000 cycles guaranteed to 80% capacity, daily cycling users reach that threshold in approximately 16–20 years. The 30% federal ITC applies to residential battery storage systems charged by solar — confirm with your installer that the battery qualifies under current IRS guidelines.

Example

Michael — 19.2 kWh Sungrow SBR system, Phoenix AZ

Michael has a Sungrow SH8.0RS hybrid inverter and wants whole-home backup. He's in Phoenix paying $0.14/kWh and plans daily solar cycling.

Battery systemSBR HV 19.2 kWh (2 modules)
Usable capacity15.4 kWh (80% DoD)
Cycles per year350 (near-daily)
Electricity rate$0.14/kWh

Results

Annual throughput~5,400 kWh/yr
Annual savings~$717/yr
System cost~$8,250 installed
Net cost after ITC~$5,775
Payback~8.1 years
Cycle life at 350/yr~17 years to 80% capacity
Ecosystem saving~$800 (native Sungrow BMS)

Michael's Sungrow ecosystem saves $800 in gateway hardware because the SBR talks natively to his SH8.0RS inverter. The 10-year warranty is backed by Sungrow's global service network — a meaningful differentiator for long-term reliability vs. less-established LFP brands.

Sungrow SBR Battery Model Comparison

Spec SBR 9.6 kWh SBR 19.2 kWh SBH 51.2 kWh
ChemistryLFPLFPLFP
Modules128
Round-trip efficiency95%95%95%
Cycle warranty6,000 @ 80%6,000 @ 80%6,000 @ 80%
Product warranty10 years10 years10 years
$/kWh installed~$430~$420~$410

FAQ

Sungrow is the world's largest inverter manufacturer by installed capacity and a top-5 global energy storage supplier. Founded in 1997 and publicly traded on the Shenzhen Stock Exchange, Sungrow has shipped over 340 GW of inverters and deployed energy storage across 150+ countries. Their SBR/SBH battery line benefits from vertical integration — Sungrow manufactures both the battery management system and inverter, ensuring tighter communication and reliability than assembled-from-parts competitors.
The SBR HV Battery is Sungrow's standard stackable LFP module — 9.6 kWh per module, stack 1–4 modules (up to 38.4 kWh). The SBH HV Pro is the high-capacity variant with up to 8 modules and 51.2 kWh total capacity. Both use the same LFP chemistry, 95% RTE, and 6,000-cycle warranty. The SBH is designed for larger homes, ADUs with battery sharing, or small commercial applications. Both use high-voltage (100–180V) DC coupling to improve round-trip efficiency compared to 48V low-voltage systems.
Sungrow SBR/SBH batteries are designed primarily for use with Sungrow SH hybrid inverters. They communicate via CAN bus and require the Sungrow ecosystem for full BMS integration. Using them with third-party inverters (Sol-Ark, Growatt, Deye) is generally not supported without a compatibility gateway — and even then, full BMS features (cell-level monitoring, cycle counting, warranty compliance) may not function. If you have a non-Sungrow inverter, consider Pylontech, Dyness, or EG4 batteries designed for universal inverter compatibility.
All three use LFP chemistry with similar cycle counts (6,000) and 10-year warranties. The key differences: Pylontech (US3000C, Force H2) is the most widely compatible with third-party inverters — it has native support in virtually every major hybrid inverter's BMS protocol list. BYD Battery-Box HVS/HVM offers excellent build quality but is priced slightly higher. Sungrow SBR offers the best value when paired with a Sungrow inverter — the vertical integration eliminates compatibility issues and reduces overall system cost. If you're committed to the Sungrow ecosystem, SBR is the clear choice.
Yes — under the Inflation Reduction Act, standalone battery storage systems qualify for the 30% federal ITC as of January 1, 2023, regardless of whether they're paired with solar panels. Previously, batteries only qualified if charged by solar. The battery must have at least 3 kWh capacity, which all Sungrow SBR modules far exceed. The credit applies to the full installed cost including hardware, wiring, and labor. Consult a tax professional to confirm eligibility for your specific situation.

Related Calculators

Embed This Calculator

Free to embed on your website. Just copy this code:

<iframe src="https://solarsizecalculator.com/sungrow-battery-calculator"
  width="100%" height="750" frameborder="0"
  title="Sungrow Battery Calculator"></iframe>