Even with proper storage and regular charging, rechargeable batteries eventually need to be replaced. This factory-approved 6V 12 Ah sealed lead acid battery fits in all TimeMark Delta (NT, I, II, and III) and Lambda traffic counters.
Instructions for changing the battery can be found in the counter's user manual. Manuals for all TimeMark counters can be found in our online Library (sign in required).
Note: Battery harness not included
All batteries slowly lose their charge. To prolong the life of your
battery, recharge it regularly, even when it's not being used. If the
voltage drops too low for too long, it may not be possible to recharge