Prepare to ride
Topeak Logo Topeak Logo
Header image faq


Why does my battery get warm during charging? Show

Your battery gets very warm when you recharge it because a chemical reaction occurs. The battery may reach temperatures of up to (104˚F/40˚C) during charging.  This is normal and causes no harm to the battery. If the battery is not drained completely before charging, it may also get warm.  Again, this is safe and causes no harm to the battery, however, we suggest you drain the battery before charging to enhance its service life.

How long can I leave the battery connected to the charger? Show

When using Topeak's recharging system the battery must first be drained to reach its maximum capacity. The Topeak recharger has an auto cut off system when the battery capacity is full. Once full, the charger will switch to a trickle-mode maintenance system and will not overcharge the battery.   Even though the charger has an auto cut-off feature, it's not generally good practice to leave the battery connected to the charger continuously for over 48 hours.  Topeak recommends disconnecting both the battery from the charger and the charger from the power outlet when not in use. Warning: Do not attempt to use any other charger with this system. This will damage the battery and void the warranty.

What is the durability and life span of the battery? Show

The durability of a rechargeable battery depends on various factors; type of cell, strain, as well as the maintenance routine. Generally, the higher the battery capacity, the longer the burn time.  Durability varies from 300 to 500 charge/discharge cycles before the capacity becomes ineffective (80% of it's nominal value).  With good care, a battery life span of approx. 3-5 years is achievable.

Which type of rechargeable battery has the highest durability? Show

Ni-MH batteries have a durability of approx. 500 cycles.
Li-Ion batteries have a durability of approx. 300-500 cycles.
In calculating durability, the life span of the battery is not the only factor for actual service life.  The maintenance routine is also important.

What is the expected life span of my lamp? Show

Typical life span for lamps are - approximately 1000 hours for 10W Solarc lamp,  approximately 2,000-3,000 hours for a halogen lamp and approximately 10,000 hours for LED. 

Can I take my lighting system underwater? Show

No.  Although your lighting system is water resistant, it is not waterproof. Your lighting system will work fine in the rain, snow or damp conditions, however, submerging your system underwater will flood the system and void the warranty.

What is the loss of capacity at low temperatures? Show

At low temperatures, particularly near or below freezing, battery voltage and capacity decreases significantly. At freezing, capacity is decreased by 5% to 10% (run time is decreased 50%). The loss of capacity of cells at a temperature of -20˚C can be almost 30% (run time is decreased 70%). This effect is temporary and the battery will not be harmed.  Normal battery capacity and voltage returns when ambient temperature is (70˚F/20˚C). Additionally, battery temperature should never exceed 140˚F/60˚C during operation or storage.

How much charge do I lose while storing my battery? Show

When stored at room temperature (about 75˚F/23˚C), your battery will lose about 1% of its capacity per day. At 104˚F/40˚C, it will lose about 5% per day.