A dealer has sold about 300 lithium golf cart packs over two years and swaps a faulty pack now and then under warranty. Customers want a replacement within a day or two, but the owner does not want too much cash tied up in spare stock.
Base spares on your own swap rate and the time it takes to replenish. Spare stock is roughly the swaps you expect during the replenishment time, plus a safety margin for a bad month. Replenishment time is production lead time plus transit and customs; Redway’s catalogue pages list about 20 days for delivery, which you should confirm for your order. Review the number every quarter as the installed base grows.
The calculation
- Installed base. Packs in service by model.
- Swap rate. Swaps per month from your own records, by model. Use real numbers, not assumptions.
- Replenishment time. Production (about 20 days listed, to be confirmed), transit and customs. Our reorder planning article shows how to build this calendar.
- Base stock. Swaps per month multiplied by replenishment time in months.
- Safety stock. Add a margin for peak season and a bad month, for example one to two extra packs per model.
An illustrative example
Suppose your records show one swap a month on a model, and replenishment takes about two months door to door. Base stock is two packs; with one pack of safety stock, you would hold three. Your figures will differ, so use your own data.
Ways to hold less
- Standardise models so one spare covers more carts.
- Diagnose before swapping, so good packs are not replaced; see our RMA steps.
- Combine spare orders with regular stock orders to share freight.
- Agree how warranty replacements are supplied. Redway’s golf cart warranty is 3 years, and 5 years on the 48V 100Ah model.
OEM custom orders have no MOQ by default (1 piece), although some specific products carry a 10-piece minimum, so confirm for your model. Redway’s wholesale and logistics page gives more background.
Quarterly review
Each quarter, compare spare stock with swaps, installed base and the next lead-time quote. Adjust by model. If a model’s swap rate rises, raise it with the supplier as a quality question, not only as a stock question.
Risk limits
Store spare packs at partial charge, in a cool, dry place, and check them during long storage. A spare that has sat flat for months may not wake when you need it. Lead times change; confirm them for each order.
Additional perspectives
Review spare stock every quarter against actual swaps. The right number in year one is rarely the right number in year three.
Redway Tech Editorial Team – Dealer owner perspective
Mark spare packs with the date they arrived and use the oldest first. Rotation keeps spares fresh and avoids storage problems.
Redway Tech Editorial Team – Service manager perspective
Treat spare packs as a service cost, priced into the margin of each sale. It keeps stock decisions about service levels rather than about cash each month.
Redway Tech Editorial Team – Finance 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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