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Tower T21 vs Battery-Box Premium HVM 22.1 5 of 9 identical Swap Change batteries

Dyness Tower T21 vs BYD Battery-Box Premium HVM 22.1

Tower T21
21.31 kWh HV
Open battery page Datasheet PDF
VS
Battery-Box Premium HVM 22.1
22.08 kWh 96.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

4 differences, none of them an advantage

The largest is usable energy: 0.77 kWh apart. 5 of 9 comparable parameters are identical, with 24 more left out because at least one datasheet does not publish them.

See all 4 differences
How alike are they
5 of 9 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 9 parameters
Parameter Tower T21 Battery-Box Premium HVM 22.1 Difference
Usable energy 21.31 kWh 22.08 kWh 0.77 kWh apart
Nominal voltage 576 V 410 V 166 V apart
Ingress protection IP54 IP55 IP54 vs IP55
Dimensions 1500x504x380 mm 2160x585x298 mm 1500x504x380 mm vs 2160x585x298 mm
02

Price offers

1 shop we track
Shop Tower T21 Battery-Box Premium HVM 22.1 At this shop
www.solar-outlet.nl Netherlands - 8 177.95 € incl. VAT Only Battery-Box Premium HVM 22.1

All 1 offer for Battery-Box Premium HVM 22.1

Shop prices by brand: See 20 Dyness offers · See 121 BYD offers

03

Full specification

Parameter Tower T21 Battery-Box Premium HVM 22.1 Difference
Capacity
Usable energy 21.31 kWh 22.08 kWh 0.77 kWh apart
Nominal energy 21.31 kWh - Not published by BYD
Depth of discharge 100 % - Not published by BYD
Max system capacity - 66.2 kWh Not published by Dyness
Modules per stack 2-6 - Not published by BYD
Power
Continuous discharge power 12.78 kW - Not published by BYD
Continuous charge power 12.78 kW - Not published by BYD
Peak discharge power - - Neither datasheet publishes this
Power per kWh 0.60 kW/kWh - Not published by BYD
Efficiency and lifetime
Round-trip efficiency - 96.0 % Not published by Dyness
Cycle life 6000 cycles - Not published by BYD
Cycle test depth - - Neither datasheet publishes this
Capacity at end of life - - Neither datasheet publishes this
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 576 V 410 V 166 V apart
Operating voltage - 320-472 V Not published by Dyness
Cell chemistry - LFP Not published by Dyness
Active cell balancing - - Neither datasheet publishes this
Thermal management - - Neither datasheet publishes this
Built-in inverter
Inverter None (battery only) None (battery only) Same
Inverter power - - Neither datasheet publishes this
Grid connection - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 269.0 kg - Not published by BYD
Weight per kWh 12.6 kg/kWh - Not published by BYD
Dimensions 1500x504x380 mm 2160x585x298 mm 1500x504x380 mm vs 2160x585x298 mm
Ingress protection IP54 IP55 IP54 vs IP55
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -10 °C -10 °C Same
Max operating temperature 50 °C 50 °C Same
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - Neither datasheet publishes this
04

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BYD Battery-Box Premium HVM 22.1 vs Deye GB-SL-EU (6 modules in series)
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BYD Battery-Box Premium HVM 22.1 vs Deye GB-L (6 modules in series)
7 differences, the largest is max system capacity
05

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.