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Home batteries · 16 models

Best 10–20 kWh home batteries (2026)

16 models in our database meet this; below the 16 in order.

Criteria:

  • Usable capacity from 10 up to 20 kWh
  • Ranking: data score with these weights: Round-trip efficiency 25 % · Warranted cycles 20 % · Warranty 20 % · Discharge power (continuous) 20 % · Backup power 15 %

A ranking based on manufacturer and register data, not a test: we have not measured the units ourselves, and price, installation and service are not included. The source of every value is on the product page.

The ranking

  1. BYD Battery-Box Premium HVM 19.3
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    BYD Battery-Box Premium HVM 19.3

    Data score 74/100

    • With backup power

    Choose this model if you want (part of) your home to keep running during a power cut.

  2. BYD Battery-Box Premium HVM 16.6
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    BYD Battery-Box Premium HVM 16.6

    Data score 74/100

    • With backup power

    Choose this model if you want (part of) your home to keep running during a power cut.

  3. BYD Battery-Box Premium HVM 13.8
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    BYD Battery-Box Premium HVM 13.8

    Data score 74/100

    • With backup power

    Choose this model if you want (part of) your home to keep running during a power cut.

  4. BYD Battery-Box Premium HVS 12.8
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    BYD Battery-Box Premium HVS 12.8

    Data score 74/100

    • With backup power

    Choose this model if you want (part of) your home to keep running during a power cut.

  5. BYD Battery-Box Premium HVM 11.0
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    BYD Battery-Box Premium HVM 11.0

    Data score 74/100

    • With backup power

    Choose this model if you want (part of) your home to keep running during a power cut.

  6. BYD Battery-Box Premium HVS 10.2
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    BYD Battery-Box Premium HVS 10.2

    Data score 74/100

    • With backup power

    Choose this model if you want (part of) your home to keep running during a power cut.

  7. Fronius Reserva 15.8
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    Fronius Reserva 15.8

    Data score 64/100

    • Discharge power (continuous) 16.38 kW: the best of 24 models in this selection
    • With backup power

    Choose this model if you want to run large loads such as a heat pump, induction hob or EV charger from the battery.

  8. sonnen sonnenBatterie 10 performance 10p / 11

    Data score 64/100

    • Warranted cycles 10,000: joint best of 8 models

    Choose this model if you will cycle the battery fully every day and want a long service life.

  9. Fronius Reserva 12.6
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    Fronius Reserva 12.6

    Data score 62/100

    • Discharge power (continuous) 12.1 kW: no. 3 of 24 models
    • With backup power

    Choose this model if you want to run large loads such as a heat pump, induction hob or EV charger from the battery.

  10. SolaX T-BAT H 12.0

    Data score 50/100

  11. SMA Home Storage 19.6

    Data score 45/100

    • With backup power
    • Weaker point: Round-trip efficiency 94.5 %: no. 10 of 12 models

    Choose this model if you want (part of) your home to keep running during a power cut.

  12. SMA Home Storage 16.4

    Data score 45/100

    • With backup power
    • Weaker point: Round-trip efficiency 94.5 %: no. 10 of 12 models

    Choose this model if you want (part of) your home to keep running during a power cut.

  13. SMA Home Storage 13.1

    Data score 45/100

    • With backup power
    • Weaker point: Round-trip efficiency 94.5 %: no. 10 of 12 models

    Choose this model if you want (part of) your home to keep running during a power cut.

  14. Sessy 2.0 10 kWh

    Data score 33/100

    • Weaker point: Discharge power (continuous) 1.7 kW: no. 24 of 24 models
  15. VARTA element backup 18
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    VARTA element backup 18

    Data score 23/100

    • Weaker point: Warranted cycles 4,000: no. 7 of 8 models
  16. VARTA element backup 12
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    VARTA element backup 12

    Data score 22/100

    • Weaker point: Warranted cycles 4,000: no. 7 of 8 models

All figures at a glance

#Model1Data scoreUsable capacityRound-trip efficiencyDischarge power (continuous)WarrantyCell chemistry
1BYD Battery-Box Premium HVM 19.37419.32 kWh96 %–10 yearsLFP
2BYD Battery-Box Premium HVM 16.67416.56 kWh96 %–10 yearsLFP
3BYD Battery-Box Premium HVM 13.87413.8 kWh96 %–10 yearsLFP
4BYD Battery-Box Premium HVS 12.87412.8 kWh96 %–10 yearsLFP
5BYD Battery-Box Premium HVM 11.07411.04 kWh96 %–10 yearsLFP
6BYD Battery-Box Premium HVS 10.27410.24 kWh96 %–10 yearsLFP
7Fronius Reserva 15.86415.79 kWh95 %16.38 kW10 yearsLFP
8sonnen sonnenBatterie 10 performance 10p / 116410 kWh–7 kW10 yearsLFP
9Fronius Reserva 12.66212.63 kWh95 %12.1 kW10 yearsLFP
10SolaX T-BAT H 12.05011 kWh95 %10.2 kW10 yearsLFP
11SMA Home Storage 19.64519.68 kWh94.5 %–10 yearsLFP
12SMA Home Storage 16.44516.4 kWh94.5 %–10 yearsLFP
13SMA Home Storage 13.14513.12 kWh94.5 %–10 yearsLFP
14Sessy 2.0 10 kWh3310.4 kWh–1.7 kW10 yearsLFP
15VARTA element backup 182317.6 kWh–4 kW10 years–
16VARTA element backup 122211.7 kWh–3.7 kW10 years–

Compare all models →

How this ranking is made

This selection is put together automatically from the 16 models in our database that meet the criteria above. We only include models whose figures for the ranking are known: without those values a model cannot be compared fairly, so it drops out. The list is recalculated with every data update, so the order can change as soon as manufacturers or registers publish new values.

The order follows a data score from 0 to 100. For each feature we determine a model’s position relative to the other models in this selection: the best value counts as 100, the weakest as 0, and equal values share the same position. We add up those positions with weights: Round-trip efficiency 25 % · Warranted cycles 20 % · Warranty 20 % · Discharge power (continuous) 20 % · Backup power 15 %. A feature that is unknown for a model does not count; if more than 40 per cent of the weight is missing, the model is left out. If two scores are equal, usable capacity decides.

The reasoning for each place is derived automatically from the same data. We name the features on which the model is in the best quarter of this selection, functions that not every model has, and a weaker point if the model falls in the bottom quarter on it. The line ‘Choose this model if …’ links the most heavily weighted strength to a situation where it matters. This is not a test and not personal advice: the installation, your home and the price also decide what works best for you.

The values come from manufacturers; the product page shows the source of every value. How we collect and check the data →

More selections

Sources

  1. Battery-Box Premium HVM – datasheet, BCU2.0 V1.0 EN (28.03.2025) — BYD Lithium Battery Co., Ltd. · accessed Sep 27, 2026