Battery Terminal Types
JIS Terminals (T1)
JIS standard batteries use T1 terminals with two size variants:
| Variant | Positive (+) | Negative (-) | Used On |
|---|---|---|---|
| T1 Small | O14.7 mm | O13.0 mm | Standard SLI batteries |
| T1 Large | O19.5 mm | O17.9 mm | Heavy-duty batteries |
Polarity Convention [0]
Standard JIS polarity is [0] (right-positive):
Viewed from terminal side (terminals closest to you):
(-) (+)
Left Right
DIN Terminals
DIN standard batteries use similar post-type terminals:
| Terminal | Post Diameter |
|---|---|
| Positive (+) | O19.5 mm |
| Negative (-) | O17.9 mm |
Polarity: [0] — Left Negative, Right Positive (same as JIS).
Hold-Down Systems
| System | Standard | Description |
|---|---|---|
| B00 | JIS | Top frame clamp across battery |
| B13 | DIN | Bottom rail — lip at base of battery |
Chengguang Terminal Options
All Chengguang batteries are available with standard terminal configurations. Custom terminal types and polarity layouts can be specified for OEM orders.