Batteries have different internal resistance and voltages even if they are the same brand and model; this leads to inefficiencies and over heating and in some cases fires, this is especially true if you attempt to wire up multiple batteries of different age.

We recommend just buying a larger capacity battery or swapping batteries.

Terrafirma Technology, Inc. warrants its product to be free from defects in workmanship and materials, under normal residential use and conditions, for a period of one (1) year for the original invoice date. Shipping and handling fees are to be paid for by the customer. The manufacturer agrees, at its option during the warranty period, to repair and defect in material or workmanship or to furnish a repaired or refurbished product of equal value in exchange without charge (except for a fee for shipping, handling, packing, return postage, and insurance which will be incurred by the customer). Such repair or replacement is subject to verification of the defect or malfunction and proof of purchase as confirmed by showing the model number on original dated sales receipt.

The Company makes no express warranty or condition whether written or oral and the company expressly disclaims all warranties and conditions not stated in this limited warranty. To the extent allowed by the local law of jurisdictions outside the United States, the Company disclaims all implied warranties or conditions, including any implied warranties of merchantability and fitness for a particular purpose. For all transactions occurring in the United States, any implied warranty of condition of merchantability, satisfactory quality, or fitness for a particular purpose is limited to the duration of the express warranty set forth above. Some states or countries do not allow a limitation on how long an implied warranty lasts or the exclusion of limitation of incidental or consequential damages for consumer products. In such sates or countries, some exclusions or limitations of this limited warranty may not apply to the Purchaser. For consumer transaction, the limited warranty terms contained in this statement, except to the extent lawfully permitted, do not exclude, restrict, or modify but are in addition to the mandatory statutory rights applicable to the sale of this Product to the Purchaser. All warranty claims must be filed by the consumer to the retailer of this product, who in turn is to contact the manufacturer regarding any warranty return or replacement. We will not handle claims from the consumer directly. Please retain invoices for a minimum of one year for warranty purposes.

CLAIM PROCEDURES: 

* Claims for defective merchandise must be made within ONE year from invoice date. Claims for missing parts must be made within 60 calendar days after the merchandise is received

* Any claim for defective merchandise returns must be packed in original packaging

* We reserve the right to specify that items be returned to the original warehouse for inspection or be inspected by our representative in the field

* Pictures are required to claim defective merchandise, along with a copy of the original invoice

* If the claim is justified, the item(s) or part(s) will be repaired or replaced or a credit will be issued. It is our policy to replace parts whenever possible

This warranty gives you specific legal rights. You may have other rights, which vary from state to state.