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G55 vs A (7 modules in series) 11 of 20 identical Swap Change batteries

Deye BOS-G55 vs Deye BOS-A (7 modules in series)

Deye BOS-G55
BOS-G55
50.68 kWh LFP HV
Open battery page Datasheet PDF
VS
Deye BOS-A (7 modules in series)
BOS-A (7 modules in series)
48.38 kWh LFP HV
Open battery page Datasheet PDF
The verdict

A (7 modules in series) leads on the differences that matter

The largest is usable energy: 2.30 kWh apart. 11 of 20 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
11 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 20 parameters
Parameter G55 A (7 modules in series) Difference
Usable energy 50.68 kWh 48.38 kWh 2.30 kWh apart
Max system capacity 61.4 kWh 176.6 kWh 115.2 kWh more room to expand
Nominal energy 56.32 kWh 53.76 kWh 2.56 kWh apart
Nominal voltage 563 V 269 V 294 V apart
Weight 610.0 kg 538.0 kg 72.0 kg lighter
Weight per kWh 12.0 kg/kWh 11.1 kg/kWh 0.9 kg/kWh lighter
Modules per stack 3-12 7-23 3-12 vs 7-23
Operating voltage 457.6-642.4 V 235.2-302.4 V 457.6-642.4 V vs 235.2-302.4 V
Dimensions 2219x530x602 mm 1351x629x605 mm 2219x530x602 mm vs 1351x629x605 mm

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02

Full specification

Parameter G55 A (7 modules in series) Difference
Capacity
Usable energy 50.68 kWh 48.38 kWh 2.30 kWh apart
Nominal energy 56.32 kWh 53.76 kWh 2.56 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 61.4 kWh 176.6 kWh +115.2 kWh for A (7 modules in series)
Modules per stack 3-12 7-23 3-12 vs 7-23
Power
Continuous discharge power - - Neither datasheet publishes this
Continuous charge power - - Neither datasheet publishes this
Peak discharge power - - Neither datasheet publishes this
Power per kWh - - Neither datasheet publishes this
Efficiency and lifetime
Round-trip efficiency - - Neither datasheet publishes this
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 90 % 90 % Same
Capacity at end of life 70 % 70 % Same
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 563 V 269 V 294 V apart
Operating voltage 457.6-642.4 V 235.2-302.4 V 457.6-642.4 V vs 235.2-302.4 V
Cell chemistry LFP LFP Same
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 610.0 kg 538.0 kg -72.0 kg for A (7 modules in series)
Weight per kWh 12.0 kg/kWh 11.1 kg/kWh -0.9 kg/kWh for A (7 modules in series)
Dimensions 2219x530x602 mm 1351x629x605 mm 2219x530x602 mm vs 1351x629x605 mm
Ingress protection IP20 IP20 Same
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -20 °C -20 °C Same
Max operating temperature 55 °C 55 °C Same
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - Neither datasheet publishes this
03

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04

Written summary

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