Cagiva C,K3, W4 Battery
The Cagiva C,K3, W4 (50cc) takes a YTZ5S battery, about 50 CCA and 3 Ah. It is a sealed agm (maintenance-free), and a lithium drop-in fits the same case.
Key takeaways
- Battery: YTZ5S (also sold as YTX4L-BS).
- Sealed AGM (maintenance-free), around 50 CCA, 3 Ah.
- Lithium drop-in fits the same YTZ5S case - lighter, longer-lived, needs a lithium charger.
- Covers 1994-1998.
- Chemistry (OEM)
- Sealed AGM (maintenance-free)
- Cold cranking amps (CCA)
- 50
- Capacity
- 3 Ah
- Engine
- 50cc
- Fits model years
- 1994-1998
The Cagiva C,K3, W4 uses a YTZ5S - sealed agm (maintenance-free). Around 50 CCA of cold-start current. Meeting or beating the OEM rating is fine; going under it can cause hard starts in the cold. About 3 Ah of capacity - the reserve that runs lights and electronics with the engine off.
AGM is the safe like-for-like: cheapest, tolerant of standard chargers and trickle tenders, and heavier. Lithium (LiFePO4) drop-ins in the same case size cut weight by roughly 60-70%, hold voltage better, and self-discharge far slower - but they cost more and need a lithium-aware charger, not an old lead-acid trickle charger.
Buy the battery for your Cagiva C,K3, W4
AGM is the safe like-for-like: cheapest, tolerant of standard chargers and trickle tenders, and heavier. Lithium (LiFePO4) drop-ins in the same case size cut weight by roughly 60-70%, hold voltage better, and self-discharge far slower - but they cost more and need a lithium-aware charger, not an old lead-acid trickle charger.
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Installing it
Disconnect the negative (-) terminal first and reconnect it last. Powersports batteries are small and light, so this is usually a 10-15 minute job with a couple of hand tools.
Frequently asked
What battery does a Cagiva C,K3, W4 take?
The Cagiva C,K3, W4 takes a YTZ5S battery (also sold as YTX4L-BS), a sealed agm (maintenance-free) rated around 50 CCA and 3 Ah.
Is the YTZ5S an AGM or lithium battery?
Sealed AGM (maintenance-free). You can also fit a LiFePO4 lithium drop-in in the same YTZ5S case size for less weight and longer life - just use a lithium-aware charger.
How many cold cranking amps (CCA) does it need?
Around 50 CCA of cold-start current. Meeting or beating the OEM rating is fine; going under it can cause hard starts in the cold.
Can I put a lithium battery in a Cagiva C,K3, W4?
Yes. Lithium (LiFePO4) drop-ins are made in the same YTZ5S case size, so they fit the tray and terminals. They weigh far less and last longer, but need a lithium-compatible charger rather than an old lead-acid trickle charger.
How do I change the battery on a Cagiva C,K3, W4?
Disconnect the negative (-) terminal first and reconnect it last. Powersports batteries are small and light, so this is usually a 10-15 minute job with a couple of hand tools.
Other motorcycles that take a YTZ5S
See every model that uses a YTZ5S battery →More parts for your Cagiva C,K3, W4
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