Free shipping is available for most orders over $200.

Average turn-around time is approximately 10 business days at our facility for most orders.

Please note that we are closed 12/25, 12/26, and 1/1.

Canadian Customers Click Here For Parcel Forwarding Information
Click Here For Ordering Information & To Learn How The Process Works
Please note!
This is a battery rebuild service. Not an attempt to sell you a new battery. You must ship your battery to us for repair.
We do not have any new or aftermarket batteries available.
SKU: B4 900928

Profoto® B4 900928 Battery Rebuild Service

$649.95
Shipping calculated at checkout.

With this purchase, you need to send your battery to us to be rebuilt. We DO NOT sell new or already rebuilt batteries.

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.

Shipping

Li-Ion batteries may be regulated for shipment based upon their size. Below are links to the regulations from the three main shipping carriers for shipping lithium batteries. 

USPS will transport batteries that are up to 100Wh per section 349.222 that can be found here.

UPS will transport batteries that are up to, but not exceeding, 300Wh per their information that can be found here. UPS Hazmat Phone: 1-800-554-9964

FedEx will transport batteries that are up to, but not exceeding, 300Wh per their information that can be found here. FedEx Hazmat Phone: 1-800-463-3339

If your battery is in excess of 300Wh, you will need to see if your local UPS or FedEx location has a staff member that is properly trained to package and ship your battery(s).

Another reference link can be found here. Page 5 references batteries that are being sent for recycling.

DOT Helpline Phone Number: 202-366-4433

PHMSA Information

Sample labels that are used for Li-Ion battery shipments can be found below.

Label 1 Domestic Ground Shipment

Label 2 Domestic Ground Shipment

Label 3 (Only for 300Wh or larger)

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.

Description

Rebuild Service for a Profoto® B4 900928 battery pack. For the cost of this service, we will open your battery pack, replace all of the cells, and then reassemble it. Cases, connectors, and circuit boards are re-used and are not replaced or serviced. The performance of our battery packs is equal to or greater than that of a brand-new battery from the OEM but at a fraction of the cost. Send your Profoto® B4 900928 battery to us and let us make it work as well as new. Our trained technicians work on Profoto® brand batteries each day. We rebuild almost all types of Profoto® brand batteries so if you cannot find the one you need please contact us. Don't wait any longer. Send your Profoto® B4 900928 battery pack to us for repair today!

Note: When we are rebuilding your battery, if your circuit board is found to be defective, we will contact you. At that time we will provide you with the option of sending us another battery or we can refund you for the rebuild service. The old cells are removed and recycled prior to circuit board testing and cannot be shipped back to you. 

Orders containing lithium batteries will ship by ground only regardless of the shipping method chosen. If you desire shipping insurance on the shipment from us back to you, please click here to add it.

Profoto® is a registered trademark. MTO Battery is not affiliated with nor endorsed by Profoto®. 

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • 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 5 reviews
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L
Luke J.
New life

I am thrilled to get my battery back and have it working like new again.

S
Shauna
B4 Battery Rebuild

Everything went exactly as they described. The battery works like new again. MTO had my Profoto B4 battery about a week and a half which is not too bad. Overall, my experience was timely and professional.

F
Felicia
Profoto B4

I was hesitant to send my very expensive Profoto B4 battery packs to an online company but I am thrilled with the results. I called and spoke with a representative who was very nice and was able to answer my questions. I looked them up online and found that they do work for the military. That made me feel a lot better, especially since I read it on a .gov website. My two battery packs work better than I ever remember them working from new. They are about six months old, and I suspect they will last a while.

P
Pierre
Very professional

I had four Profoto B4 batteries rebuilt by MTO. I experienced trouble with two of them after a few months. MTO did not hesitate to step up and assist me with the issues. They found that the cells were out of balance and that the root cause was the circuit board within those two batteries. There was a very small load being put on specific battery cells when the battery was not being used. They had to leave my batteries to rest for a few days for the discharge to be noticeable. I sent them two other Profoto B4 battery packs to put the cells into and the problem has not reoccurred since. I use these batteries weekly for my business and have no complaints about their performance.

Given the quality of the customer service and the functionality of the product, I will continue to solicit this company.

M
Manuck X.
Service is great

I must say that service is great on these battery. All five battery are working like new again. We appreciate that you offer this service to keep equipment working.