---
title: "Deye BOS-G40 vs Deye BOS-G40 Pro - Battery Comparison | ComparePV"
description: "Compare Deye BOS-G40 vs Deye BOS-G40 Pro side by side: usable energy, round-trip efficiency, power, cycle life and the full specification."
source: "https://comparepv.com/compare-batteries/bos-g40/deye-bos-g40-pro"
updated: 2026-01-25
---

# Deye BOS-G40 vs Deye BOS-G40 Pro

G40 Pro leads on the differences that matter

The largest is max system capacity: 20.5 kWh more room to expand. 15 of 20 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.


## The two batteries


| Attribute | A | B |
| --- | --- | --- |
| Battery | [Deye BOS-G40](https://comparepv.com/battery/bos-g40) | [Deye BOS-G40 Pro](https://comparepv.com/battery/deye-bos-g40-pro) |
| Manufacturer | Deye | Deye |
| Usable energy | 36.86 kWh | 36.86 kWh |
| Cells and voltage | LFP HV | LFP HV |

[See 44 Deye offers](https://comparepv.com/offers?manufacturer=deye&product_type=battery)


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | G40 | G40 Pro | Difference |
| --- | --- | --- | --- |
| Max system capacity | 61.4 kWh | 81.9 kWh | +20.5 kWh for G40 Pro |
| Weight | 420.0 kg | 428.0 kg | -8.0 kg for G40 |
| Ingress protection | IP20 | IP20 (battery enclosure) | IP20 vs IP20 (battery enclosure) |
| Modules per stack | 3-12 | 5-16 | 3-12 vs 5-16 |
| Operating voltage | 332.8-467.2 V | 352-467.2 V | 332.8-467.2 V vs 352-467.2 V |


## Every compared parameter


| Parameter | G40 | G40 Pro |
| --- | --- | --- |
| Usable energy | 36.86 kWh | 36.86 kWh |
| Nominal energy | 40.96 kWh | 40.96 kWh |
| Depth of discharge | 90 % | 90 % |
| Max system capacity | 61.4 kWh | 81.9 kWh |
| Modules per stack | 3-12 | 5-16 |
| Continuous discharge power | - | 40.96 kW |
| Continuous charge power | - | 40.96 kW |
| Peak discharge power | - | 51.20 kW |
| Power per kWh | - | 1.11 kW/kWh |
| Round-trip efficiency | - | - |
| Cycle life | 6000 cycles | 6000 cycles |
| Cycle test depth | 90 % | 90 % |
| Capacity at end of life | 70 % | 70 % |
| Self-discharge | - | - |
| Voltage class | High voltage | High voltage |
| Nominal voltage | 410 V | 410 V |
| Operating voltage | 332.8-467.2 V | 352-467.2 V |
| Cell chemistry | LFP | LFP |
| Active cell balancing | - | - |
| Thermal management | - | - |
| Inverter | None (battery only) | None (battery only) |
| Inverter power | - | - |
| Grid connection | - | - |
| Backup power | - | - |
| Weight | 420.0 kg | 428.0 kg |
| Weight per kWh | 11.4 kg/kWh | 11.6 kg/kWh |
| Dimensions | 1629x530x602 mm | 1629x530x602 mm |
| Ingress protection | IP20 | IP20 (battery enclosure) |
| Outdoor-rated | - | - |
| Min operating temperature | -20 °C | -20 °C |
| Max operating temperature | 55 °C | 55 °C |
| Warranty | 10 yrs | 10 yrs |
| Warranted throughput | - | - |


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Source: https://comparepv.com/compare-batteries/bos-g40/deye-bos-g40-pro

Not in this file, on the page: a written summary generated on request.