In short
- 12 V · 3 Ah · 50 A EN
- 114 × 71 × 86 mm · positive terminal on the right
- Satkit replacement: OUTDO UTX4L-BS
The YTX4L-BS is a 12 V maintenance-free AGM motorcycle battery with a capacity of 3 Ah, 50 cold cranking amps (EN) and a case measuring 114 × 71 × 86 mm. The positive terminal is on the right when you’re facing the label.
Dimensions and specifications
| YTX4L-BS | OUTDO UTX4L-BS | |
|---|---|---|
| Voltage | 12 V | 12 V |
| Capacity | 3 Ah (10 h) · 3.2 Ah (20 h) | 4 Ah (10 h) |
| Cold cranking amps | 50 A (EN) | 50 A at −18 °C |
| Length × width × height | 114 × 71 × 86 mm | 113 × 70 × 85 mm |
| Polarity | Positive terminal on the right | Positive terminal on the right |
| Technology | AGM | AGM |
| Supplied | With an acid bottle | Activated and charged |
| Weight | — | 1.14 kg |
The YTX4L-BS column gives the specifications from Yuasa, the brand behind the battery code; the other column gives the specifications for the battery sold by Satkit. Capacity is always compared at the same hourly rate, and starting current using the same standard.
What does YTX4L-BS mean?
- Y: Yuasa, which created this naming system. Other manufacturers change only this letter (GS uses GTX, Exide uses ETX and BS Battery uses BTX), keeping the rest of the code the same.
- TX: the maintenance-free AGM series.
- 4: a size and power index, not the amp-hour rating: the YTX4L-BS has a capacity of 3 Ah at the 10-hour rate.
- L: reversed polarity, with the positive terminal on the right when you’re facing the label.
- -BS: the original battery is supplied dry with its acid bottle (bottle supplied), so it must be filled before fitting.
Battery codes that are easy to mix up with the YTX4L-BS
| Battery code | Dimensions | Polarity | Difference |
|---|---|---|---|
| YB4L-B | 121 × 71 × 93 mm | + right | A different case: 7 mm longer and 7 mm taller. |
| YTX5L-BS | 115 × 72 × 107 mm | + right | A different case: 21 mm taller. |
Satkit battery for YTX4L-BS
OUTDO UTX4L-BS: 12 V and 4 Ah, 50 A starting current, sealed AGM, factory-activated and factory-charged.
Yuasa’s YTX4L-BS is supplied with the acid bottle separately; the Satkit battery arrives activated and charged, so you can skip the filling and initial charge.
