9 kWh

Battery moduleTigo Energy

Tigo Energy TSB

6.6–19.8 kWh · 3.5–5.2 kW · Lithium Iron Phosphate · 5 configurations

UL 1973CEC listed · Jan 21, 2022

Usable energy9 kWh
Continuous power3.5–5.2 kW
Warranty11 years
ChemistryLithium Iron Phosphate

Overview

CEC Battery List

TSB: 9 kWh usable energy; 3.5–5.2 kW continuous; lithium iron phosphate; 11 years warranty.

Models & configurations

CEC Battery List · 5 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
TSB-7-US	6.6 kWh	—	—	—	Jan 21, 2022
TSB-10-US	9.9 kWh	—	—	—	Jan 21, 2022
TSB-14-US	13.2 kWh	—	—	—	Jan 21, 2022
TSB-17-US	16.5 kWh	—	—	—	Jan 21, 2022
TSB-20-US	19.8 kWh	—	—	—	Jan 21, 2022

Capacity & power

CEC Battery List

Nameplate energy (CEC)6.6–19.8 kWh
Total energy (datasheet)9.9–19.8 kWh
Usable energy9 kWh
Depth of discharge90%
Max continuous discharge (CEC)3.5–5.2 kW
Full-power discharge timeabout 1.7 h at full power
Round-trip efficiency (datasheet)94.4% DC
ChemistryLithium Iron Phosphate

How long can it power your home?

Cali-Graf calculation

Average home load	Runtime from full
0.5 kW	≈ 18 h
1 kW	≈ 9 h
2 kW	≈ 4.5 h
3 kW	≈ 3 h
5.2 kW (full continuous power)	≈ 1.7 h

Runtime = 9 kWh usable (datasheet) ÷ load. A typical home averages 1–2 kW; air conditioning and EV charging use much more. Inverter and wiring losses shorten it.

Charging from solar in Southern California

NLR PVWatts v8 · Cali-Graf calculation

City	December	June
Los Angeles	2.8 kW	1.7 kW
Palmdale	2.6 kW	1.5 kW
Chula Vista	2.4 kW	1.7 kW
Huntington Beach	2.6 kW	1.8 kW
Riverside	2.7 kW	1.6 kW
Santa Clarita	2.7 kW	1.6 kW

Solar array size that refills the battery from empty in one average day, before the home uses any of it (NLR PVWatts v8, 20° south roof).

Installation & environment

CEC Battery List · Tigo Energy datasheet

Installation locationindoor/outdoor
Operating temperature−10 to 50 °C
Weight per kWh1 kWh

Warranty

CEC Battery List · Tigo Energy datasheet

Warranty term11 years
Warranted cycles6,000 cycles

Safety listings

CEC Battery List

UL 1973 (stationary battery)Certified by Intertek
Certificate date & editionNov 8, 2021 · Ed. 2 : 2018
Other standards on datasheetUL 9540, UL 1973, FCC

Full specifications

CEC Battery List · Tigo Energy datasheet

Communicationrs485
Manufacturer websitetigoenergy.com

Compare with similar batteries

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
LG Energy Solution RESU 10H Prime	9.6–16 kWh	5 kW	Lithium Ion	—	127
Qcells Q.SAVE	9–18 kWh	5.5–11.1 kW	Lithium Iron	10 years	30
EG4 Electronics WP-16/280-1AWLL	14.3 kWh	10.2 kW	Lithium Iron Phosphate	10 years	5
FOXESS ECS4000-H5	25 kWh	14.4 kW	Lithium Iron Phosphate	—	1
RNG International Renogy X	20 kWh	10 kW	Lithium Iron Phosphate	10 years	1
GoodWe SECU-S Series	11.5–18.4 kWh	2.9–23 kW	Lithium Iron Phosphate	—	—

Same segment, similar capacity; each row from the same sources.

Documents

manufacturer documents

PDF
Datasheet: Tigo EI Battery (US)
Datasheet · Feb 2024

Questions & answers

How much energy does the Tigo Energy TSB store?

9 kWh usable, per the manufacturer datasheet.

How long can the TSB power a home?

About 9 hours at an average 1 kW load from a full charge (9 kWh usable); higher loads shorten it.

Can the TSB be installed outdoors?

Installation location per the datasheet: indoor/outdoor.

What warranty does the TSB have?

11 years (datasheet).

Sources

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
California Energy Commission — Battery List, data as of Oct 7, 2026.
Tigo Energy — manufacturer datasheet “EI Battery TSB-10/20-US Specification The Tigo EI Battery Storage provides energy resilience in the event of”.
Tigo Energy — document library on the manufacturer’s website (links above).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).