BYD Battery-Box Combiner Box Plus
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The BYD Battery-Box Combiner Box Plus (CBH-70A) enables the parallel connection of two or three compatible BYD Battery-Box HV towers via a single DC cable pair to the inverter. The Combiner Box supports HVS, HVM, HVB, HVM+, HVS+ and HVE systems. Always verify the current, model-specific BYD Compatible Inverter List and ensure that all battery towers share the same model, identical module configuration and equal State of Charge (SOC) at commissioning.
Why do installers choose the BYD Combiner Box Plus CBH-70A?
- Single DC cable pair to the inverter — simplified wiring
- Compatible with BYD Battery-Box HVS / HVM / HVB / HVM+ / HVS+ / HVE
- IP65 — suitable for indoor and sheltered, permanently shaded outdoor installation
- Max. 70 A output current — 50 A per tower
- Natural Convection cooling — no active fan required
- 10-year manufacturer warranty · EN IEC 61439-1/2 · RoHS · REACH · POPS
Confirmed BYD System Configurations with Solis and GoodWe
The Solis and GoodWe system configurations below are confirmed for HVB, HVM+ and HVS+ in accordance with the BYD Compatible Inverter List V1.6. For HVS, HVM and HVE, consult the separate current BYD documentation for the relevant battery platform. The valid combination is determined by battery model, module configuration, number of towers, inverter model and firmware of both inverter and battery.
Confirmed Solis System Configurations — HVB/HVM+/HVS+ parallel
HVB: 3–10 modules / HVM+: 3–8 modules / HVS+: 2–5 modules per tower · 2–3 towers parallel · BYD firmware 1.28.0
- S6-EH3P(3-10)K-H-EU — HMI: V1B-B2 / DSP: V0F-A2
- S6-EH3P(5-10)K2-H — HMI: V1B-B2 / DSP: V0F-A2
- S6-EH3P(12-20)K-H — DSP: V09-35 / HMI: V0D-04 / HMI-LCD: V09-01
- S6-EH3P(8-12)K-LV-ND-H — HMI: V1B-B2 / DSP: V0F-A2
- S6-EH3P(12-20)K-ND-H — DSP: V09-35 / HMI: V0D-04 / HMI-LCD: V09-01
⚠️ When HVB/HVM+/HVS+ batteries are connected in parallel to the Solis inverters listed above, the CBH-70A is mandatory — the CBH-40A must not be used. Wiring must be carried out by the installer in accordance with local regulations.
Confirmed GoodWe System Configurations — HVB/HVM+/HVS+ parallel
HVB: 4–10 modules / HVM+: 4–8 modules / HVS+: 2–5 modules per tower · 2–3 towers parallel · BYD firmware 1.28.0
- GoodWe ET G2 — min. firmware ARM 13
- GoodWe ET (15–30 kW) — min. firmware ARM 09
⚠️ When HVB/HVM+/HVS+ batteries are connected in parallel to the GoodWe ET (15–30 kW), the CBH-70A is mandatory — the CBH-40A must not be used. Wiring must be carried out by the installer in accordance with local regulations.
- Single DC cable pair to the inverter: Consolidates multiple HV battery strings into one DC cable pair — simplifies wiring and improves system overview.
- IP65 for indoor and sheltered outdoor installation: For outdoor installation, the enclosure must be permanently shaded and protected from direct solar radiation. For indoor installation, adequate ventilation must be ensured — in accordance with BYD Installation Manual section 2.1.
- BYD-prescribed solution for HVB/HVM+/HVS+ parallel with Solis and GoodWe ET: Product certifications in accordance with EN IEC 61439-1/2 — the only BYD-approved Combiner Box for these configurations.
Recommended System Combination
| Component | Product | Application |
|---|---|---|
| DC parallel distribution platform | BYD Combiner Box Plus CBH-70A | Parallel connection of 2–3 HV towers |
| HV home battery | BYD Battery-Box HVS+ / HVM+ / HVB | High-voltage energy storage — same model per parallel system |
| 3-phase hybrid inverter (Solis) | Solis S6-EH3P(3-10)K-H-EU / S6-EH3P(12-20)K-H | 3-phase HV system — CBH-70A required for HVB/HVM+/HVS+ |
| 3-phase hybrid inverter (GoodWe) | GoodWe ET G2 | 3-phase HV system — CBH-70A required for HVB/HVM+/HVS+ |
| Parameter | Value |
|---|---|
| Model | CBH-70A |
| Compatible Battery-Box models | HVS / HVM / HVB / HVM+ / HVS+ / HVE |
| Max. number of battery towers | 2 or 3 (parallel) |
| Max. input current per tower | 50 A |
| Max. output current | 70 A |
| Max. operating voltage | 1000 V DC |
| Protection rating | IP65 |
| Operating temperature | −20 °C to +50 °C |
| Operating humidity | 0 %–95 % RH, non-condensing |
| Cooling | Natural Convection — no active fan |
| Installation method | Wall mount; indoor or sheltered outdoor, protected from direct solar radiation |
| Max. installation altitude | <4000 m |
| Dimensions (W × D × H) | 350 × 300 × 114.2 mm |
| Weight | 8 kg |
| Warranty | 10 years |
| Certifications | EN IEC 61439-1/2 · IEC 61439-1/2 · AS/NZS 61439-1/2 · RoHS · REACH · POPS |
- CBH-40A prohibited for HVB/HVM+/HVS+ parallel: The CBH-70A is mandatory when connecting in parallel to Solis or GoodWe ET (15–30 kW). Wiring by installer in accordance with local regulations.
- Do not mix models: HVB ↔ HVM+ and HVB ↔ HVS+ and HVM+ ↔ HVS+ combinations are not permitted.
- Identical module configuration and equal SOC across all towers at commissioning.
- Always install the latest firmware on the Battery-Box before commissioning.
- For HVB/HVM+/HVS+: BYD Compatible Inverter List V1.6. For HVS/HVM/HVE: consult the separate current BYD documentation.
- Installation by qualified electricians only. Max. 1000 V DC — risk to life from contact with live components.
What is included in the box with the BYD Combiner Box Plus CBH-70A?
| Item | Specification | Quantity |
|---|---|---|
| BYD Battery-Box Combiner Box Plus | CBH-70A | 1× |
| Power cable connector for inverter connection | Suitable for 16 mm² | 1× |
| Power cable connector for battery connection | Suitable for 10 mm² | 3× |
| Positioning cardboard | — | 1× |
| Installation manual | — | 1× |
| Connector special tool | — | 1× |
| Mounting bracket | — | 2× |
| Lock screw | M5 | 4× |
| Expansion bolts | M8 | 2× |
Not included: DC cable (min. 10 mm² battery connection, min. 16 mm² inverter connection), PE earth cable (min. 10 mm²), OT cable lugs M6, heat shrink tubing, hydraulic crimping tool YQK-70, drill and torque wrench. See section 5.1 of the installation manual for the complete tool list.
Which BYD Battery-Box models are compatible with the Combiner Box Plus?
The CBH-70A supports BYD Battery-Box HVS, HVM, HVB, HVM+, HVS+ and HVE. For HVB/HVM+/HVS+, the BYD Compatible Inverter List V1.6 applies. For HVS, HVM and HVE, consult the separate current BYD documentation. HVB, HVM+ and HVS+ must not be mixed with each other. All towers must have identical module configuration and equal SOC at commissioning.
Which BYD HV system configurations with Solis and GoodWe require or support the CBH-70A?
For certain HVB/HVM+/HVS+ configurations the CBH-70A is mandatory — see the compatibility tables above. The confirmed Solis and GoodWe models, module ranges and minimum firmware versions are fully listed in the highlight boxes above. Download the complete BYD Compatible Inverter List V1.6 via the button above.
What are the cable requirements for installing the CBH-70A?
In accordance with BYD Installation Manual section 5.3.2 — DC cables are not included and must be sourced by the installer:
- Battery connection (B+ / B−): min. 10 mm² (8 AWG) — strip length 10 mm
- Inverter connection (P+ / P−): min. 16 mm² (6 AWG) — strip length 10 mm
- PE earth cable: min. 10 mm² (8 AWG)
- Cable lugs: OT terminal M6 — crimp with hydraulic crimping tool YQK-70
- Torque: M5 screws 4–5 N·m · M8 expansion bolts 9 N·m
What are the maintenance requirements for the Combiner Box Plus?
BYD recommends annual inspection in accordance with section 7 of the installation manual: check for abnormal heat development, unusual odours or physical damage; inspect terminals for oxidation or looseness; check IP65 sealing gaskets for ageing or damage. Always de-energise the system completely before carrying out any work.
Why do installers choose the BYD Combiner Box Plus for multi-tower HV systems?
The CBH-70A is the BYD-prescribed distribution solution for multi-tower HV parallel systems — with product certifications in accordance with EN IEC 61439-1/2, IP65 protection, passive cooling without a fan and a 10-year manufacturer warranty. For HVB/HVM+/HVS+ parallel with Solis or GoodWe ET (15–30 kW), the CBH-70A is the only BYD-approved Combiner Box in accordance with the BYD Compatible Inverter List V1.6.
As an official BYD distributor, Rebor supplies the Combiner Box Plus directly from stock and supports installers with technical advice and project configurations. Explore our BYD Battery-Box range and compatible Solis and GoodWe hybrid inverters.
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Top product met hoge opslagcapaciteit voor een scherpe prijs !
Super prestatie's voor een scherpe prijs
Commande bien reçu , société, très sérieuse, produits totalement conforme à mes attentes, je suis très satisfait du service client, très rapide en réponse et au niveau de l’envoi du produit, parfait pour une Smartbox Marstek monophasé . Merci à vous. Cordialement.
Prima advies (deze thuisbatterij past prima bij de eerder gekochte Goodwe hybrid omvormer.
Snel tot een order gekomen en ook vlot geleverd.
Een tevreden klant
Item received. Will test later. I am familiar with this product. Previous experience has been good.