Current turn-around times at our facility have been averaging 5-7 business days for most smaller orders.


934NI-CAD Teledyne ISCO® Battery Rebuild Service

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Charging Recommendations

1. Always ensure that the battery is not hot and is at room temperature before charging.

2. Once charged, remove the battery from the charger. Do not store the battery on the charger for extended periods of time. Please note that storing a battery in a charger that is not plugged into the wall, can potentially cause the battery to drain back into the charger. This was more common with older chargers and we have also noted it in some newer chargers.

3. It is recommended to not store the battery on the device when not in use. Storing the battery separately removes the possibility of the device slowly draining the battery. 

4. If you have not used the battery for 2-3 months, we would recommend recharging the battery and if possible, use them. This helps maintain their health.

5. Lastly, be sure to store your battery in a dry environment. If possible, avoid temperatures below freezing and above 110F to maximize battery life.


NiCad & NiMH batteries are not regulated when shipped by ground or by air.

This is a battery rebuild service!

You must ship YOUR battery to us to be repaired. We DO NOT sell new, used rebuilt, or aftermarket battery packs.


Rebuild Service for a Teledyne ISCO® 934NI-CAD battery pack. For the cost of this service, we will open the battery pack, replace all cells, and reassemble. Original parts such as the circuit board, connector, and battery case are re-used and carry no warranty or guarantee from MTO since we do not repair them. The capacity of our battery packs is the same as a brand new battery from the OEM but at a fraction of the cost. We use high-quality brand-name cells in our rebuilds. Send your battery to us and let us make it work as well as new. Our trained technicians rebuild Teledyne ISCO® brand batteries nearly every day. We rebuild all types of National Power® brand batteries. Don't wait any longer. Send your Teledyne ISCO 934NI-CAD battery pack to us for repair today!

Note: This is a rebuild service and not an attempt to sell a new or aftermarket battery pack. With this service, you must send your battery to us to be repaired. 

Payment & Security

Payment methods

  • American Express
  • Diners Club
  • Discover
  • Mastercard
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor do we have access to your credit card information.

Customer Reviews

Based on 2 reviews
David R.
ISCO Compositor Batteries

So far the rebuilt Batteries have worked flawlessly. Fast service and ships quickly.
Waypoint Analytical will continue to use MTO for all our Battery Rebuilds.

Much more run time

We had 8 of these rebuilt and they are fantastic. The run time is way longer. I called MTO about it and they advised that they used 9Ah cells instead of the 5Ah cells that were originally in it. I am very impressed by MTO. Very rarely do companies underpromise and overperform these days.