Batteries for Tennant S9
Which battery does a Tennant S9 need?
Battery analysis for your Tennant S9
Quick answer You need an GEL battery of 125 Ah. Our recommendation: TROJAN 5SHP-GEL.
Prices and availability updated on 23/10/2026
Based on the batteries we found for your vehicle, our experts help you pick the right one.
📋 What we found
For your Tennant S9 we found 2 compatible batteries.
📏 Battery size
The list contains batteries in different sizes or capacities (Ah). In many cases both variants fit, but it's worth checking your compartment dimensions and the Ah of your original battery before buying. Choose the one with the same dimensions as your current battery: a bigger one may not fit the compartment or the hold-down. If several match your size, the higher capacity gives more headroom for cold starts.
⭐ Our recommendation
For your Tennant S9 we recommend the TROJAN 5SHP-GEL (GEL, 125 Ah). It also has the highest capacity (Ah) on the list — more autonomy to power consumers with the engine off and more reserve for prolonged loads.
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Verified selection
- Class: Floor sweeper batteries
- Brand: Tennant
- Model: S9
Conventional Battery
This is a standard or conventional battery for vehicles without a start-stop system
Why we recommend the TROJAN 5SHP-GEL
For €192.70 more you get +34 Ah capacity.
| RecommendedTROJAN 5SHP-GEL | CheapestTROJAN 27-GEL | |
|---|---|---|
| Capacity | 125 Ah | 91 Ah |
| Technology | GEL | GEL |
| Why | Highest Ah | — |
| Price | €944.20 | €751.50 |
-
Solar battery Trojan 5SHP-GEL 12V 125Ah GEL
- 12 V
- 125 Ah
- GEL TROJAN 5SHP-GEL · 125 Ah
Dimensions 345×171×283 mm
- ✓ Highest Ah
€944.20
-
Solar battery Trojan 27-GEL 12V 91Ah GEL
- 12 V
- 91 Ah
- GEL TROJAN 27-GEL · 91 Ah
Dimensions 324×171×234 mm
€751.50
Frequently asked questions
- The Tennant S9 uses the battery shown on this page. Check voltage, capacity and dimensions before ordering. If there is no published price, ask for a quote and we reply the same day.
- Yes, as long as it has the same voltage, fits in the battery compartment and the Tennant S9 charger is compatible. More capacity (Ah) means more run time; changing the voltage or battery type without adapting the charger can damage the equipment.
- Many machines run at 24, 36 or 48 V with several 6, 8 or 12 V batteries connected in series (voltages add up; the Ah capacity is that of one unit). The model page tells you how many units it takes. Always replace the whole set with identical batteries of the same age.
- Not advisable. A starter battery delivers a lot of current for a few seconds; a deep-cycle battery has thick plates built to be discharged to 50-80% and recharged every day. In traction, cleaning or mobility equipment a starter battery lasts very few cycles.
- Some references are not published in the shop: click "Request a quote" and we reply the same working day with price and lead time. Those with a price can be bought online and ship the same day if you order before 6:00 pm.