# Service bulletin SB\-70

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11019514
- Published by NHTSA: 2025\-06\-12
- Manufacturer's number: SB\-70
- Manufacturer's date: 2024\-04\-01
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

It has come to our attention that on certain 2023\-2024 Convoy and 2023 Tiffin \(GH1\) Motorhomes the Xantrex inverter controller will start charging the battery as intended but will stop charging before it is completely full. The inverter will continue to power 110V components until the battery is completely depleted, causing battery to die faster, and in some instances must be “woken up” from an external power source, such as another battery. Tiffin Motorhomes will configure the Xantrex Inverter controller, so the settings are changed from flooded battery to lithium to allow for higher capacity. We have also changed the configuration of the inverter to increase battery voltage cutoff limit for 110V output. This will not allow the inverter to power 110V components when the battery voltage reaches this limit.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11019514-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11019514-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2023 to 2024 TIFFIN CONVOY
- 2023 TIFFIN GH1

JSON: [/v1/bulletins/11019514](/v1/bulletins/11019514)

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