Call us: 651-448-0064
email: sales@polytechinnovations.com
35283 340th Street, Lake City, MN 55041
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Bluff  Valley Battery - Battery Repair Service
We can rebuild all types of Ni-Cd and Ni-Mh battery packs.  We use the same standard NiCd 2200 mAh cells as in our battery rebuild kits with upgrades to NiMh cells available.  These packs can be sent to our facility for quality rebuild and fast turn around.  Prices include shipping back to you.  Please check back often as we are constantly updating this list.  If you don't see your battery in this list, call us at 651-448-0064 for pricing.

CLICK HERE FOR PRICING.
Just send your batteries to:  Bluff Valley Battery, 35283 340th Street, Lake City, MN 55041.  Please include you name and phone number and we will call you when they are done to arrange payment or you may just include a check.  Above prices include postage back to you.  We recommend shipping batteries to us using USPS Regional A Box (this seems to be the most economical), but we do accept all types of shipments.
Sub C Ni-Cd Cells that are used in all my rebuild kits.  They are quality 1.2 Volt Ni-Cd cells that have a capacity of 2200 mAh.  You can also buy other battery pack parts in my store.  Click here to order.
Individual Battery Cells
Lithium ion 18650 Cells that are used in rebuilding the lithium ion battery packs.  You can buy these cells individually in my store.  Click here to enter.
Sub C Ni-Mh  Cells that can be used to upgrade all battery repairs or our rebuild kits.  They are quality 1.2 Volt Ni-Mh cells that have a capacity of 2600 mAh, 3000 mAh, 3400 mAh or 3800 mAh.  You can also buy other battery pack parts in my store.  Click here to order.
Sub 4/5 C Ni-Cd Cells that are used in all my rebuild kits.  They are quality 1.2 Volt Ni-Cd cells that have a capacity of 2100 mAh.  You can also buy other battery pack parts in my store.  Click here to order.
Nickel metal hydride (NiMH) advantages:                            Nickel cadmium (NiCad) advantages:
** lighter than NiCad                                                                    ** Longer Life Cycles
** 2-3X capacity to equal size NiCad                                          ** Performs in cold tempertures (good performance down to 20 F)
                                                                                                    ** Lower self-discharge level than NiMh
                                                                                                    ** No voltage drop at/near discharge level
​                                                                                                    ** Less expensive

Nickel metal hydride (NiMH) disadvantages:                      Nickle Cadmium (NiCad) disadvantages:
** fewer life cycles compared to NiCad                                    ** Heavy
** shorter run time                                                                     ** May suffer from "Memory Effect" if constantly discharged                                                                                                                                               half-way and then recharged
** performs the worst in cold temperatures
** higher self-discharge level than NiCad
** voltage drop at near-discharged levels
** More expensive

NiCd versus NiMh