Skip to main content
GB-SL-EU (5 modules in series) vs Tower T17 4 of 15 identical Swap Change batteries

Deye GB-SL-EU (5 modules in series) vs Dyness Tower T17

Deye GB-SL-EU (5 modules in series)
GB-SL-EU (5 modules in series)
18.4 kWh LFP HV
Open battery page Datasheet PDF
VS
Tower T17
17.76 kWh HV
Open battery page Datasheet PDF
The verdict

Tower T17 leads on the differences that matter

The largest is usable energy: 0.64 kWh apart. 4 of 15 comparable parameters are identical, with 18 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
4 of 15 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 15 parameters
Parameter GB-SL-EU (5 modules in series) Tower T17 Difference
Usable energy 18.40 kWh 17.76 kWh 0.64 kWh apart
Nominal energy 20.45 kWh 17.76 kWh 2.69 kWh apart
Depth of discharge 90 % 100 % 10 pp more of the cells usable
Nominal voltage 512 V 480 V 32 V apart
Weight 254.0 kg 228.0 kg 26.0 kg lighter
Min operating temperature -20 °C -10 °C 10 °C more cold tolerant
Weight per kWh 13.8 kg/kWh 12.8 kg/kWh 1.0 kg/kWh lighter
Max operating temperature 60 °C 50 °C 10 °C more heat tolerant
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Ingress protection IP65 IP54 IP65 vs IP54
Dimensions 1760x540x385 mm 1300x504x380 mm 1760x540x385 mm vs 1300x504x380 mm

Shop prices by brand: See 44 Deye offers · See 26 Dyness offers

02

Full specification

Parameter GB-SL-EU (5 modules in series) Tower T17 Difference
Capacity
Usable energy 18.40 kWh 17.76 kWh 0.64 kWh apart
Nominal energy 20.45 kWh 17.76 kWh 2.69 kWh apart
Depth of discharge 90 % 100 % +10 pp for Tower T17
Max system capacity 24.5 kWh - Not published by Dyness
Modules per stack 2-6 2-6 Same
Power
Continuous discharge power - 10.65 kW Not published by Deye
Continuous charge power - 10.65 kW Not published by Deye
Peak discharge power - - Neither datasheet publishes this
Power per kWh - 0.60 kW/kWh Not published by Deye
Efficiency and lifetime
Round-trip efficiency - - Neither datasheet publishes this
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 90 % - Not published by Dyness
Capacity at end of life 70 % - Not published by Dyness
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 512 V 480 V 32 V apart
Operating voltage 179.2-691.2 V - Not published by Dyness
Cell chemistry LFP - Not published by Dyness
Active cell balancing - - Neither datasheet publishes this
Thermal management Yes - Not published by Dyness
Built-in inverter
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Inverter power - - Neither datasheet publishes this
Grid connection 3-phase - Not published by Dyness
Backup power - - Neither datasheet publishes this
Physical
Weight 254.0 kg 228.0 kg -26.0 kg for Tower T17
Weight per kWh 13.8 kg/kWh 12.8 kg/kWh -1.0 kg/kWh for Tower T17
Dimensions 1760x540x385 mm 1300x504x380 mm 1760x540x385 mm vs 1300x504x380 mm
Ingress protection IP65 IP54 IP65 vs IP54
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -20 °C -10 °C -10 °C for GB-SL-EU (5 modules in series)
Max operating temperature 60 °C 50 °C +10 °C for GB-SL-EU (5 modules in series)
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

Open all batteries
Similar capacity
Deye GB-SL-EU (5 modules in series) vs Deye GB-L20
5 differences, the largest is weight
Similar capacity
Deye GB-SL-EU (5 modules in series) vs Solplanet Ai-HB 200A
9 differences, the largest is max system capacity
Similar capacity
Deye GB-SL-EU (5 modules in series) vs Deye BOS-G20
10 differences, the largest is max system capacity
Similar capacity
Dyness Tower T17 vs FoxESS ECS2900-H7
9 differences, the largest is usable energy
Similar capacity
Dyness Tower T17 vs Dyness Tower Pro TP19
14 differences, the largest is usable energy
04

Written summary

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