A fleet is replacing lead-acid batteries with 48V lithium packs. The existing trucks and chargers use one style of plug, and the new pack data sheet lists a Rema charging connector and an Anderson discharge connector. The maintenance team wants to know what to check so that nothing overheats or fails to mate.
Check four things: the connector’s current rating against the pack’s continuous current, the mating half on the truck and charger, the cable cross-section, and keying so that the wrong voltage cannot be connected. Redway’s 48V 600Ah pack, for example, lists a Rema 320A charging connector and an Anderson 350A discharge connector, with 200A continuous charge and 300A continuous discharge.
Ratings, with Redway’s numbers
- 48V 600Ah pack: Rema 320A charging connector, Anderson 350A discharge connector; 200A continuous charge, 300A continuous discharge, 1000A peak for 5 s.
- 24V 280Ah pack: Rema 160A charging, Anderson 175A discharge; 200A continuous charge, 300A continuous discharge.
A connector rating usually refers to continuous current at a stated temperature rise. Short peaks above it are normal in traction use, but the connector, cable and contacts must suit the truck’s real duty. Where a figure looks tight, ask the supplier how the connector was selected for that pack.
What to check on site
- Mating halves. The truck and charger plugs must be the same series and size as the pack side. Mixing brands or sizes can cause poor contact and heat.
- Keying and colour. Many connector families use coloured housings or keys by voltage. Keep the system consistent so a 24V charger cannot be plugged into a 48V pack.
- Cables. Check cross-section, length, lugs and crimps. A good connector on an undersized cable still runs hot.
- Wear. Inspect contacts for pitting or discolouration, and replace worn halves in pairs.
Redway’s connectors and accessories page and our charger matching article give more background.
Spare parts
Keep a small stock of connector halves, contacts and handles for the types on site, and record which trucks and chargers use which part. Order spares with the packs, because the exact part may take time to source later. Replace damaged housings immediately, as a cracked housing can let in dirt and moisture.
Risk limits
Never disconnect a connector under load, and do not modify or bypass connectors to fit an old plug. Use only parts approved by the pack supplier. Connector types differ between models; confirm the specification for yours with Redway.
Additional perspectives
Add connector inspection to the monthly checklist with a photo of the contacts. Heat marks are easy to see early and expensive to ignore.
Redway Tech Editorial Team – Maintenance technician perspective
Ask the supplier for the connector’s rated current, ambient temperature assumption and recommended cable size in one table. Then compare it with logged current from the truck.
Redway Tech Editorial Team – Electrical engineer perspective
Standardise one connector type per voltage across the site, including chargers. It prevents wrong connections and reduces the number of spare plugs you need.
Redway Tech Editorial Team – Fleet manager perspective
Specifications are taken from Redway product pages as of October 2026. Where a figure isn’t published, this article says so. Confirm current specifications for your model with Redway before ordering. This article is general guidance, not a site-specific engineering assessment.
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